102311010520 has 64 divisors (see below), whose sum is σ = 238215816000. Its totient is φ = 39500256768.

The previous prime is 102311010509. The next prime is 102311010521. The reversal of 102311010520 is 25010113201.

It is a junction number, because it is equal to n+sod(n) for n = 102311010494 and 102311010503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102311010521) 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 15 ways as a sum of consecutive naturals, for example, 4004346 + ... + 4029814.

It is an arithmetic number, because the mean of its divisors is an integer number (3722122125).

Almost surely, 2^102311010520 is an apocalyptic number.

102311010520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102311010520 is an abundant number, since it is smaller than the sum of its proper divisors (135904805480).

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

102311010520 is a wasteful number, since it uses less digits than its factorization.

102311010520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28972 (or 28968 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

Adding to 102311010520 its reverse (25010113201), we get a palindrome (127321123721).

The spelling of 102311010520 in words is "one hundred two billion, three hundred eleven million, ten thousand, five hundred twenty".