31118479 has 24 divisors (see below), whose sum is σ = 38167200. Its totient is φ = 25260480.

The previous prime is 31118459. The next prime is 31118497. The reversal of 31118479 is 97481113.

It is not a de Polignac number, because 31118479 - 2⁹ = 31117967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31118419) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86502 + ... + 86860.

It is an arithmetic number, because the mean of its divisors is an integer number (1590300).

Almost surely, 2^31118479 is an apocalyptic number.

31118479 is a deficient number, since it is larger than the sum of its proper divisors (7048721).

31118479 is a wasteful number, since it uses less digits than its factorization.

31118479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463 (or 456 counting only the distinct ones).

The product of its digits is 6048, while the sum is 34.

The square root of 31118479 is about 5578.3939444969. The cubic root of 31118479 is about 314.5377582364.

The spelling of 31118479 in words is "thirty-one million, one hundred eighteen thousand, four hundred seventy-nine".