131312111100020 has 48 divisors (see below), whose sum is σ = 288078224716800. Its totient is φ = 50182938533376.

The previous prime is 131312111100019. The next prime is 131312111100041. The reversal of 131312111100020 is 20001111213131.

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, 164991845 + ... + 165785804.

It is an arithmetic number, because the mean of its divisors is an integer number (6001629681600).

Almost surely, 2^{131312111100020} is an apocalyptic number.

131312111100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131312111100020 is an abundant number, since it is smaller than the sum of its proper divisors (156766113616780).

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

131312111100020 is a wasteful number, since it uses less digits than its factorization.

131312111100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330778544 (or 330778542 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 131312111100020 its reverse (20001111213131), we get a palindrome (151313222313151).

The spelling of 131312111100020 in words is "one hundred thirty-one trillion, three hundred twelve billion, one hundred eleven million, one hundred thousand, twenty".