131693723 has 12 divisors (see below), whose sum is σ = 155794680. Its totient is φ = 110964672.

The previous prime is 131693719. The next prime is 131693759. The reversal of 131693723 is 327396131.

It is not a de Polignac number, because 131693723 - 2² = 131693719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131693773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19886 + ... + 25667.

It is an arithmetic number, because the mean of its divisors is an integer number (12982890).

Almost surely, 2^131693723 is an apocalyptic number.

131693723 is a deficient number, since it is larger than the sum of its proper divisors (24100957).

131693723 is an equidigital number, since it uses as much as digits as its factorization.

131693723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45626 (or 45619 counting only the distinct ones).

The product of its digits is 20412, while the sum is 35.

The square root of 131693723 is about 11475.7885567834. The cubic root of 131693723 is about 508.7702306689.

The spelling of 131693723 in words is "one hundred thirty-one million, six hundred ninety-three thousand, seven hundred twenty-three".