131389257956 has 72 divisors (see below), whose sum is σ = 257247365760. Its totient is φ = 58663725120.

The previous prime is 131389257899. The next prime is 131389258003. The reversal of 131389257956 is 659752983131.

It is a junction number, because it is equal to n+sod(n) for n = 131389257895 and 131389257904.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7523771 + ... + 7541213.

It is an arithmetic number, because the mean of its divisors is an integer number (3572880080).

Almost surely, 2^131389257956 is an apocalyptic number.

It is an amenable number.

131389257956 is a deficient number, since it is larger than the sum of its proper divisors (125858107804).

131389257956 is a wasteful number, since it uses less digits than its factorization.

131389257956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17745 (or 17732 counting only the distinct ones).

The product of its digits is 12247200, while the sum is 59.

The spelling of 131389257956 in words is "one hundred thirty-one billion, three hundred eighty-nine million, two hundred fifty-seven thousand, nine hundred fifty-six".