131512304 has 40 divisors (see below), whose sum is σ = 317682048. Its totient is φ = 51238080.

The previous prime is 131512301. The next prime is 131512307. The reversal of 131512304 is 403215131.

It is an interprime number because it is at equal distance from previous prime (131512301) and next prime (131512307).

It is a super-2 number, since 2×131512304² = 34590972206776832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131512301) 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, 52142 + ... + 54605.

Almost surely, 2^131512304 is an apocalyptic number.

131512304 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

131512304 is an abundant number, since it is smaller than the sum of its proper divisors (186169744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131512304 is a wasteful number, since it uses less digits than its factorization.

131512304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106773 (or 106767 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 131512304 is about 11467.8814085253. The cubic root of 131512304 is about 508.5364989446.

Adding to 131512304 its reverse (403215131), we get a palindrome (534727435).

The spelling of 131512304 in words is "one hundred thirty-one million, five hundred twelve thousand, three hundred four".