131023936 has 14 divisors (see below), whose sum is σ = 260000750. Its totient is φ = 65511936.

The previous prime is 131023901. The next prime is 131023969. The reversal of 131023936 is 639320131.

It can be written as a sum of positive squares in only one way, i.e., 126697536 + 4326400 = 11256^2 + 2080^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1023561 + ... + 1023688.

Almost surely, 2^131023936 is an apocalyptic number.

131023936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

131023936 is a deficient number, since it is larger than the sum of its proper divisors (128976814).

131023936 is an equidigital number, since it uses as much as digits as its factorization.

131023936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047261 (or 2047251 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 131023936 is about 11446.5687435144. The cubic root of 131023936 is about 507.9062385080.

The spelling of 131023936 in words is "one hundred thirty-one million, twenty-three thousand, nine hundred thirty-six".