102431100020 has 24 divisors (see below), whose sum is σ = 216044644200. Its totient is φ = 40793519232.

The previous prime is 102431100017. The next prime is 102431100041. The reversal of 102431100020 is 20001134201.

It can be written as a sum of positive squares in 4 ways, for example, as 56897515024 + 45533584996 = 238532^2 + 213386^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102431099968 and 102431100004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11177855 + ... + 11187014.

It is an arithmetic number, because the mean of its divisors is an integer number (9001860175).

Almost surely, 2^102431100020 is an apocalyptic number.

102431100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102431100020 is an abundant number, since it is smaller than the sum of its proper divisors (113613544180).

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

102431100020 is a wasteful number, since it uses less digits than its factorization.

102431100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22365107 (or 22365105 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 102431100020 its reverse (20001134201), we get a palindrome (122432234221).

The spelling of 102431100020 in words is "one hundred two billion, four hundred thirty-one million, one hundred thousand, twenty".