131624513 has 4 divisors (see below), whose sum is σ = 132927828. Its totient is φ = 130321200.

The previous prime is 131624509. The next prime is 131624527. The reversal of 131624513 is 315426131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89737729 + 41886784 = 9473^2 + 6472^2 .

It is a cyclic number.

It is not a de Polignac number, because 131624513 - 2² = 131624509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131624573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651506 + ... + 651707.

It is an arithmetic number, because the mean of its divisors is an integer number (33231957).

Almost surely, 2^131624513 is an apocalyptic number.

It is an amenable number.

131624513 is a deficient number, since it is larger than the sum of its proper divisors (1303315).

131624513 is a wasteful number, since it uses less digits than its factorization.

131624513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303314.

The product of its digits is 2160, while the sum is 26.

The square root of 131624513 is about 11472.7726814402. The cubic root of 131624513 is about 508.6810890933.

The spelling of 131624513 in words is "one hundred thirty-one million, six hundred twenty-four thousand, five hundred thirteen".