131356979 has 16 divisors (see below), whose sum is σ = 152712000. Its totient is φ = 111974016.

The previous prime is 131356961. The next prime is 131356987. The reversal of 131356979 is 979653131.

It is a cyclic number.

It is not a de Polignac number, because 131356979 - 2¹² = 131352883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131356999) 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, 1097 + ... + 16245.

It is an arithmetic number, because the mean of its divisors is an integer number (9544500).

Almost surely, 2^131356979 is an apocalyptic number.

131356979 is a deficient number, since it is larger than the sum of its proper divisors (21355021).

131356979 is a wasteful number, since it uses less digits than its factorization.

131356979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15214.

The product of its digits is 153090, while the sum is 44.

The square root of 131356979 is about 11461.1072327241. The cubic root of 131356979 is about 508.3362146452.

The spelling of 131356979 in words is "one hundred thirty-one million, three hundred fifty-six thousand, nine hundred seventy-nine".