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23231003012 = 22743109229773
BaseRepresentation
bin10101101000101011…
…001111100110000100
32012222000020020010222
4111220223033212010
5340034114044022
614401105003512
71451454160520
oct255053174604
965860206128
1023231003012
119941328448
124604023598
132262bacb39
1411a5460d80
1590e740242
hex568acf984

23231003012 has 96 divisors (see below), whose sum is σ = 48250540800. Its totient is φ = 9580902912.

The previous prime is 23231002997. The next prime is 23231003017. The reversal of 23231003012 is 21030013232.

It is not an unprimeable number, because it can be changed into a prime (23231003017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30052658 + ... + 30053430.

It is an arithmetic number, because the mean of its divisors is an integer number (502609800).

Almost surely, 223231003012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23231003012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24125270400).

23231003012 is an abundant number, since it is smaller than the sum of its proper divisors (25019537788).

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

23231003012 is a wasteful number, since it uses less digits than its factorization.

23231003012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165 (or 1163 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 23231003012 its reverse (21030013232), we get a palindrome (44261016244).

The spelling of 23231003012 in words is "twenty-three billion, two hundred thirty-one million, three thousand, twelve".

Divisors: 1 2 4 7 14 28 43 86 109 172 218 229 301 436 458 602 763 773 916 1204 1526 1546 1603 3052 3092 3206 4687 5411 6412 9374 9847 10822 18748 19694 21644 24961 32809 33239 39388 49922 65618 66478 68929 84257 99844 131236 132956 137858 168514 174727 177017 232673 275716 337028 349454 354034 465346 589799 698908 708068 930692 1073323 1179598 1239119 2146646 2359196 2478238 3623051 4293292 4956476 7246102 7513261 7611731 14492204 15026522 15223462 19294853 25361357 30053044 30446924 38589706 50722714 53282117 77179412 101445428 106564234 135063971 213128468 270127942 540255884 829678679 1659357358 3318714716 5807750753 11615501506 23231003012