131709604 has 24 divisors (see below), whose sum is σ = 253507968. Its totient is φ = 59494560.

The previous prime is 131709601. The next prime is 131709623. The reversal of 131709604 is 406907131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (131709601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24502 + ... + 29389.

It is an arithmetic number, because the mean of its divisors is an integer number (10562832).

Almost surely, 2^131709604 is an apocalyptic number.

It is an amenable number.

131709604 is a deficient number, since it is larger than the sum of its proper divisors (121798364).

131709604 is a wasteful number, since it uses less digits than its factorization.

131709604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53955 (or 53953 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 131709604 is about 11476.4804709458. The cubic root of 131709604 is about 508.7906807837.

The spelling of 131709604 in words is "one hundred thirty-one million, seven hundred nine thousand, six hundred four".