131019385156 has 27 divisors (see below), whose sum is σ = 252038144253. Its totient is φ = 59550646320.

The previous prime is 131019385127. The next prime is 131019385177. The reversal of 131019385156 is 651583910131.

The square root of 131019385156 is 361966.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 120902244100 + 10117141056 = 347710^2 + 100584^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7955026 + ... + 7971478.

Almost surely, 2^131019385156 is an apocalyptic number.

131019385156 is the 361966-th square number.

It is an amenable number.

131019385156 is a deficient number, since it is larger than the sum of its proper divisors (121018759097).

131019385156 is an frugal number, since it uses more digits than its factorization.

131019385156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32932 (or 16466 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 43.

The spelling of 131019385156 in words is "one hundred thirty-one billion, nineteen million, three hundred eighty-five thousand, one hundred fifty-six".