31679793 has 12 divisors (see below), whose sum is σ = 45871488. Its totient is φ = 21068280.

The previous prime is 31679779. The next prime is 31679797. The reversal of 31679793 is 39797613.

It is not a de Polignac number, because 31679793 - 2⁶ = 31679729 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31679797) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 205 + ... + 7962.

It is an arithmetic number, because the mean of its divisors is an integer number (3822624).

Almost surely, 2^31679793 is an apocalyptic number.

It is an amenable number.

31679793 is a deficient number, since it is larger than the sum of its proper divisors (14191695).

31679793 is a wasteful number, since it uses less digits than its factorization.

31679793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8604 (or 8601 counting only the distinct ones).

The product of its digits is 214326, while the sum is 45.

The square root of 31679793 is about 5628.4805231963. The cubic root of 31679793 is about 316.4177065683.

The spelling of 31679793 in words is "thirty-one million, six hundred seventy-nine thousand, seven hundred ninety-three".