31716961379 has 32 divisors (see below), whose sum is σ = 33451570944. Its totient is φ = 30046947840.

The previous prime is 31716961369. The next prime is 31716961433. The reversal of 31716961379 is 97316961713.

It is a cyclic number.

It is not a de Polignac number, because 31716961379 - 2⁴ = 31716961363 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31716961379.

It is not an unprimeable number, because it can be changed into a prime (31716961369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56335352 + ... + 56335914.

It is an arithmetic number, because the mean of its divisors is an integer number (1045361592).

Almost surely, 2^31716961379 is an apocalyptic number.

31716961379 is a deficient number, since it is larger than the sum of its proper divisors (1734609565).

31716961379 is a wasteful number, since it uses less digits than its factorization.

31716961379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947.

The product of its digits is 1285956, while the sum is 53.

The spelling of 31716961379 in words is "thirty-one billion, seven hundred sixteen million, nine hundred sixty-one thousand, three hundred seventy-nine".