102312515320 has 64 divisors (see below), whose sum is σ = 237690858240. Its totient is φ = 39594547200.

The previous prime is 102312515213. The next prime is 102312515381. The reversal of 102312515320 is 23515213201.

It is a super-2 number, since 2×102312515320² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6217824 + ... + 6234256.

It is an arithmetic number, because the mean of its divisors is an integer number (3713919660).

Almost surely, 2^102312515320 is an apocalyptic number.

102312515320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102312515320 is an abundant number, since it is smaller than the sum of its proper divisors (135378342920).

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

102312515320 is a wasteful number, since it uses less digits than its factorization.

102312515320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21496 (or 21492 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 102312515320 its reverse (23515213201), we get a palindrome (125827728521).

The spelling of 102312515320 in words is "one hundred two billion, three hundred twelve million, five hundred fifteen thousand, three hundred twenty".