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23311231230 = 2357131847373
BaseRepresentation
bin10101101101011101…
…010010100011111110
32020011121012020120110
4111231131102203332
5340220133344410
614413052330450
71453450124160
oct255535224376
966147166513
1023311231230
119982645061
124626a73a26
1322766c0061
1411b1d86930
159167db720
hex56d7528fe

23311231230 has 64 divisors (see below), whose sum is σ = 64427539968. Its totient is φ = 5287601280.

The previous prime is 23311231217. The next prime is 23311231289. The reversal of 23311231230 is 3213211332.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 23311231197 and 23311231206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 396177 + ... + 451196.

It is an arithmetic number, because the mean of its divisors is an integer number (1006680312).

Almost surely, 223311231230 is an apocalyptic number.

23311231230 is an abundant number, since it is smaller than the sum of its proper divisors (41116308738).

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

23311231230 is a wasteful number, since it uses less digits than its factorization.

23311231230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847521.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 23311231230 its reverse (3213211332), we get a palindrome (26524442562).

It can be divided in two parts, 23311 and 231230, that added together give a triangular number (254541 = T713).

The spelling of 23311231230 in words is "twenty-three billion, three hundred eleven million, two hundred thirty-one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 131 210 262 393 655 786 917 1310 1834 1965 2751 3930 4585 5502 9170 13755 27510 847373 1694746 2542119 4236865 5084238 5931611 8473730 11863222 12710595 17794833 25421190 29658055 35589666 59316110 88974165 111005863 177948330 222011726 333017589 555029315 666035178 777041041 1110058630 1554082082 1665087945 2331123123 3330175890 3885205205 4662246246 7770410410 11655615615 23311231230