131403304 has 8 divisors (see below), whose sum is σ = 246381210. Its totient is φ = 65701648.

The previous prime is 131403299. The next prime is 131403331. The reversal of 131403304 is 403304131.

It can be written as a sum of positive squares in only one way, i.e., 96000804 + 35402500 = 9798^2 + 5950^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8212699 + ... + 8212714.

Almost surely, 2^131403304 is an apocalyptic number.

It is an amenable number.

131403304 is a deficient number, since it is larger than the sum of its proper divisors (114977906).

131403304 is a wasteful number, since it uses less digits than its factorization.

131403304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16425419 (or 16425415 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 131403304 is about 11463.1280198731. The cubic root of 131403304 is about 508.3959650739.

Adding to 131403304 its reverse (403304131), we get a palindrome (534707435).

The spelling of 131403304 in words is "one hundred thirty-one million, four hundred three thousand, three hundred four".