131313604 has 12 divisors (see below), whose sum is σ = 230022828. Its totient is φ = 65592800.

The previous prime is 131313587. The next prime is 131313607. The reversal of 131313604 is 406313131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 61591104 + 69722500 = 7848^2 + 8350^2 .

It is not an unprimeable number, because it can be changed into a prime (131313607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11227 + ... + 19714.

It is an arithmetic number, because the mean of its divisors is an integer number (19168569).

Almost surely, 2^131313604 is an apocalyptic number.

It is an amenable number.

131313604 is a deficient number, since it is larger than the sum of its proper divisors (98709224).

131313604 is a wasteful number, since it uses less digits than its factorization.

131313604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32006 (or 32004 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 131313604 is about 11459.2148073068. The cubic root of 131313604 is about 508.2802564189.

Adding to 131313604 its reverse (406313131), we get a palindrome (537626735).

The spelling of 131313604 in words is "one hundred thirty-one million, three hundred thirteen thousand, six hundred four".