131931323 has 4 divisors (see below), whose sum is σ = 131957040. Its totient is φ = 131905608.

The previous prime is 131931287. The next prime is 131931329. The reversal of 131931323 is 323139131.

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

It is a cyclic number.

It is not a de Polignac number, because 131931323 - 2¹⁰ = 131930299 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131931292 and 131931301.

It is not an unprimeable number, because it can be changed into a prime (131931329) 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, 2240 + ... + 16397.

It is an arithmetic number, because the mean of its divisors is an integer number (32989260).

Almost surely, 2^131931323 is an apocalyptic number.

131931323 is a deficient number, since it is larger than the sum of its proper divisors (25717).

131931323 is an equidigital number, since it uses as much as digits as its factorization.

131931323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25716.

The product of its digits is 1458, while the sum is 26.

The square root of 131931323 is about 11486.1361214292. The cubic root of 131931323 is about 509.0760189223.

The spelling of 131931323 in words is "one hundred thirty-one million, nine hundred thirty-one thousand, three hundred twenty-three".