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23201310222 = 23331431572053
BaseRepresentation
bin10101100110111001…
…111110011000001110
32012212221100200022000
4111212321332120032
5340004013411342
614354124333130
71450643611566
oct254671763016
965787320260
1023201310222
119926597852
1245b60a41a6
1322599b493c
1411a1531da6
1590bd2744c
hex566e7e60e

23201310222 has 128 divisors (see below), whose sum is σ = 54832926720. Its totient is φ = 7260140160.

The previous prime is 23201310149. The next prime is 23201310233. The reversal of 23201310222 is 22201310232.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23201310195 and 23201310204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11300148 + ... + 11302200.

It is an arithmetic number, because the mean of its divisors is an integer number (428382240).

Almost surely, 223201310222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23201310222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27416463360).

23201310222 is an abundant number, since it is smaller than the sum of its proper divisors (31631616498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23201310222 is a wasteful number, since it uses less digits than its factorization.

23201310222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2295 (or 2289 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 23201310222 its reverse (22201310232), we get a palindrome (45402620454).

The spelling of 23201310222 in words is "twenty-three billion, two hundred one million, three hundred ten thousand, two hundred twenty-two".

Divisors: 1 2 3 6 9 18 27 31 43 54 62 86 93 129 157 186 258 279 314 387 471 558 774 837 942 1161 1333 1413 1674 2053 2322 2666 2826 3999 4106 4239 4867 6159 6751 7998 8478 9734 11997 12318 13502 14601 18477 20253 23994 29202 35991 36954 40506 43803 55431 60759 63643 71982 87606 88279 110862 121518 127286 131409 176558 182277 190929 209281 262818 264837 322321 364554 381858 418562 529674 572787 627843 644642 794511 966963 1145574 1255686 1589022 1718361 1883529 1933926 2383533 2736649 2900889 3436722 3767058 4767066 5473298 5650587 5801778 8209947 8702667 9991951 11301174 13859803 16419894 17405334 19983902 24629841 27719606 29975853 41579409 49259682 59951706 73889523 83158818 89927559 124738227 147779046 179855118 249476454 269782677 374214681 429653893 539565354 748429362 859307786 1288961679 2577923358 3866885037 7733770074 11600655111 23201310222