31679018 has 16 divisors (see below), whose sum is σ = 54471744. Its totient is φ = 13535520.

The previous prime is 31678963. The next prime is 31679029. The reversal of 31679018 is 81097613.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1598 + ... + 8118.

It is an arithmetic number, because the mean of its divisors is an integer number (3404484).

Almost surely, 2^31679018 is an apocalyptic number.

31679018 is a deficient number, since it is larger than the sum of its proper divisors (22792726).

31679018 is a wasteful number, since it uses less digits than its factorization.

31679018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6877.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 31679018 is about 5628.4116764856. The cubic root of 31679018 is about 316.4151263144.

The spelling of 31679018 in words is "thirty-one million, six hundred seventy-nine thousand, eighteen".