31679394 has 8 divisors (see below), whose sum is σ = 63358800. Its totient is φ = 10559796.

The previous prime is 31679387. The next prime is 31679413. The reversal of 31679394 is 49397613.

It is a sphenic number, since it is the product of 3 distinct primes.

31679394 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2639944 + ... + 2639955.

It is an arithmetic number, because the mean of its divisors is an integer number (7919850).

Almost surely, 2^31679394 is an apocalyptic number.

31679394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31679394 is a wasteful number, since it uses less digits than its factorization.

31679394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5279904.

The product of its digits is 122472, while the sum is 42.

The square root of 31679394 is about 5628.4450783498. The cubic root of 31679394 is about 316.4163781590.

It can be divided in two parts, 3167 and 9394, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 31679394 in words is "thirty-one million, six hundred seventy-nine thousand, three hundred ninety-four".