131097591956 has 24 divisors (see below), whose sum is σ = 233329148640. Its totient is φ = 64432310432.

The previous prime is 131097591943. The next prime is 131097591979. The reversal of 131097591956 is 659195790131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5081666 + ... + 5107398.

It is an arithmetic number, because the mean of its divisors is an integer number (9722047860).

Almost surely, 2^131097591956 is an apocalyptic number.

It is an amenable number.

131097591956 is a deficient number, since it is larger than the sum of its proper divisors (102231556684).

131097591956 is a wasteful number, since it uses less digits than its factorization.

131097591956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47383 (or 47381 counting only the distinct ones).

The product of its (nonzero) digits is 2296350, while the sum is 56.

The spelling of 131097591956 in words is "one hundred thirty-one billion, ninety-seven million, five hundred ninety-one thousand, nine hundred fifty-six".