131031421320 has 128 divisors (see below), whose sum is σ = 394717824000. Its totient is φ = 34797724416.

The previous prime is 131031421319. The next prime is 131031421331. The reversal of 131031421320 is 23124130131.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31964631 + ... + 31968729.

It is an arithmetic number, because the mean of its divisors is an integer number (3083733000).

Almost surely, 2^131031421320 is an apocalyptic number.

131031421320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131031421320 is an abundant number, since it is smaller than the sum of its proper divisors (263686402680).

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

131031421320 is a wasteful number, since it uses less digits than its factorization.

131031421320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5147 (or 5143 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 131031421320 its reverse (23124130131), we get a palindrome (154155551451).

The spelling of 131031421320 in words is "one hundred thirty-one billion, thirty-one million, four hundred twenty-one thousand, three hundred twenty".