131324929 has 4 divisors (see below), whose sum is σ = 132800580. Its totient is φ = 129849280.

The previous prime is 131324911. The next prime is 131324933. The reversal of 131324929 is 929423131.

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 57760000 + 73564929 = 7600^2 + 8577^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131324929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131324894 and 131324903.

It is not an unprimeable number, because it can be changed into a prime (131324989) 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, 737692 + ... + 737869.

It is an arithmetic number, because the mean of its divisors is an integer number (33200145).

Almost surely, 2^131324929 is an apocalyptic number.

It is an amenable number.

131324929 is a deficient number, since it is larger than the sum of its proper divisors (1475651).

131324929 is an equidigital number, since it uses as much as digits as its factorization.

131324929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475650.

The product of its digits is 11664, while the sum is 34.

The square root of 131324929 is about 11459.7089404574. The cubic root of 131324929 is about 508.2948680262.

The spelling of 131324929 in words is "one hundred thirty-one million, three hundred twenty-four thousand, nine hundred twenty-nine".