131555104 has 12 divisors (see below), whose sum is σ = 258999174. Its totient is φ = 65777536.

The previous prime is 131555087. The next prime is 131555111. The reversal of 131555104 is 401555131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 119858704 + 11696400 = 10948^2 + 3420^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2055517 + ... + 2055580.

Almost surely, 2^131555104 is an apocalyptic number.

It is an amenable number.

131555104 is a deficient number, since it is larger than the sum of its proper divisors (127444070).

131555104 is an equidigital number, since it uses as much as digits as its factorization.

131555104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4111107 (or 4111099 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 131555104 is about 11469.7473381065. The cubic root of 131555104 is about 508.5916598200.

The spelling of 131555104 in words is "one hundred thirty-one million, five hundred fifty-five thousand, one hundred four".