131304515 has 16 divisors (see below), whose sum is σ = 168404832. Its totient is φ = 97933824.

The previous prime is 131304473. The next prime is 131304517. The reversal of 131304515 is 515403131.

It is a cyclic number.

It is not a de Polignac number, because 131304515 - 2⁸ = 131304259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131304517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1877 + ... + 16313.

It is an arithmetic number, because the mean of its divisors is an integer number (10525302).

Almost surely, 2^131304515 is an apocalyptic number.

131304515 is a deficient number, since it is larger than the sum of its proper divisors (37100317).

131304515 is a wasteful number, since it uses less digits than its factorization.

131304515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14566.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 131304515 is about 11458.8182200435. The cubic root of 131304515 is about 508.2685291093.

Adding to 131304515 its reverse (515403131), we get a palindrome (646707646).

The spelling of 131304515 in words is "one hundred thirty-one million, three hundred four thousand, five hundred fifteen".