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23102312212 = 2272909283631
BaseRepresentation
bin10101100001000000…
…010100111100010100
32012122001002001120001
4111201000110330110
5334303142442322
614340230421044
71445332261630
oct254100247424
965561061501
1023102312212
119885720111
124588b01784
132242332235
141192321dc0
159032be827
hex561014f14

23102312212 has 24 divisors (see below), whose sum is σ = 46220670720. Its totient is φ = 9897552480.

The previous prime is 23102312201. The next prime is 23102312237. The reversal of 23102312212 is 21221320132.

It is a self number, because there is not a number n which added to its sum of digits gives 23102312212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60364 + ... + 223267.

It is an arithmetic number, because the mean of its divisors is an integer number (1925861280).

Almost surely, 223102312212 is an apocalyptic number.

It is an amenable number.

23102312212 is an abundant number, since it is smaller than the sum of its proper divisors (23118358508).

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

23102312212 is a wasteful number, since it uses less digits than its factorization.

23102312212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286551 (or 286549 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 23102312212 its reverse (21221320132), we get a palindrome (44323632344).

The spelling of 23102312212 in words is "twenty-three billion, one hundred two million, three hundred twelve thousand, two hundred twelve".

Divisors: 1 2 4 7 14 28 2909 5818 11636 20363 40726 81452 283631 567262 1134524 1985417 3970834 7941668 825082579 1650165158 3300330316 5775578053 11551156106 23102312212