131577523720 has 16 divisors (see below), whose sum is σ = 296049428460. Its totient is φ = 52631009472.

The previous prime is 131577523691. The next prime is 131577523811. The reversal of 131577523720 is 27325775131.

It can be written as a sum of positive squares in 2 ways, for example, as 113416727076 + 18160796644 = 336774^2 + 134762^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1644719007 + ... + 1644719086.

Almost surely, 2^131577523720 is an apocalyptic number.

131577523720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131577523720 is an abundant number, since it is smaller than the sum of its proper divisors (164471904740).

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

131577523720 is a wasteful number, since it uses less digits than its factorization.

131577523720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3289438104 (or 3289438100 counting only the distinct ones).

The product of its (nonzero) digits is 308700, while the sum is 43.

The spelling of 131577523720 in words is "one hundred thirty-one billion, five hundred seventy-seven million, five hundred twenty-three thousand, seven hundred twenty".