131231574396 has 144 divisors (see below), whose sum is σ = 367165903104. Its totient is φ = 39258805248.

The previous prime is 131231574377. The next prime is 131231574403. The reversal of 131231574396 is 693475132131.

131231574396 is a `hidden beast` number, since 1 + 3 + 12 + 31 + 574 + 39 + 6 = 666.

It is a super-2 number, since 2×131231574396² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41435605 + ... + 41438771.

It is an arithmetic number, because the mean of its divisors is an integer number (2549763216).

Almost surely, 2^131231574396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131231574396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183582951552).

131231574396 is an abundant number, since it is smaller than the sum of its proper divisors (235934328708).

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

131231574396 is a wasteful number, since it uses less digits than its factorization.

131231574396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5620 (or 5615 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The spelling of 131231574396 in words is "one hundred thirty-one billion, two hundred thirty-one million, five hundred seventy-four thousand, three hundred ninety-six".