31679105 has 16 divisors (see below), whose sum is σ = 38730960. Its totient is φ = 24870912.

The previous prime is 31679093. The next prime is 31679113. The reversal of 31679105 is 50197613.

It can be written as a sum of positive squares in 8 ways, for example, as 229441 + 31449664 = 479^2 + 5608^2 .

It is a cyclic number.

It is not a de Polignac number, because 31679105 - 2²⁰ = 30630529 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114227 + ... + 114503.

It is an arithmetic number, because the mean of its divisors is an integer number (2420685).

Almost surely, 2^31679105 is an apocalyptic number.

It is an amenable number.

31679105 is a deficient number, since it is larger than the sum of its proper divisors (7051855).

31679105 is a wasteful number, since it uses less digits than its factorization.

31679105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 31679105 is about 5628.4194051261. The cubic root of 31679105 is about 316.4154159708.

The spelling of 31679105 in words is "thirty-one million, six hundred seventy-nine thousand, one hundred five".