31214056 has 8 divisors (see below), whose sum is σ = 58526370. Its totient is φ = 15607024.

The previous prime is 31214041. The next prime is 31214069. The reversal of 31214056 is 65041213.

It can be written as a sum of positive squares in only one way, i.e., 26522500 + 4691556 = 5150^2 + 2166^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×31214056² = 1948634583942272, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 1950871 + ... + 1950886.

Almost surely, 2^31214056 is an apocalyptic number.

31214056 is the 3534-th centered pentagonal number.

It is an amenable number.

31214056 is a deficient number, since it is larger than the sum of its proper divisors (27312314).

31214056 is a wasteful number, since it uses less digits than its factorization.

31214056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901763 (or 3901759 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 31214056 is about 5586.9540896628. The cubic root of 31214056 is about 314.8594518702.

Adding to 31214056 its reverse (65041213), we get a palindrome (96255269).

The spelling of 31214056 in words is "thirty-one million, two hundred fourteen thousand, fifty-six".