131131892 has 6 divisors (see below), whose sum is σ = 229480818. Its totient is φ = 65565944.

The previous prime is 131131877. The next prime is 131131909. The reversal of 131131892 is 298131131.

It can be written as a sum of positive squares in only one way, i.e., 108910096 + 22221796 = 10436^2 + 4714^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16391483 + ... + 16391490.

It is an arithmetic number, because the mean of its divisors is an integer number (38246803).

Almost surely, 2^131131892 is an apocalyptic number.

It is an amenable number.

131131892 is a deficient number, since it is larger than the sum of its proper divisors (98348926).

131131892 is a wasteful number, since it uses less digits than its factorization.

131131892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32782977 (or 32782975 counting only the distinct ones).

The product of its digits is 1296, while the sum is 29.

The square root of 131131892 is about 11451.2834215209. The cubic root of 131131892 is about 508.0456951476.

The spelling of 131131892 in words is "one hundred thirty-one million, one hundred thirty-one thousand, eight hundred ninety-two".