31416931 has 12 divisors (see below), whose sum is σ = 38880912. Its totient is φ = 24856416.

The previous prime is 31416929. The next prime is 31416949. The reversal of 31416931 is 13961413.

It is not a de Polignac number, because 31416931 - 2¹ = 31416929 is a prime.

It is a super-2 number, since 2×31416931² = 1974047106917522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31416931.

It is not an unprimeable number, because it can be changed into a prime (31416971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12096 + ... + 14461.

It is an arithmetic number, because the mean of its divisors is an integer number (3240076).

Almost surely, 2^31416931 is an apocalyptic number.

31416931 is a deficient number, since it is larger than the sum of its proper divisors (7463981).

31416931 is a wasteful number, since it uses less digits than its factorization.

31416931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26590 (or 26577 counting only the distinct ones).

The product of its digits is 1944, while the sum is 28.

The square root of 31416931 is about 5605.0808201131. The cubic root of 31416931 is about 315.5401197889.

The spelling of 31416931 in words is "thirty-one million, four hundred sixteen thousand, nine hundred thirty-one".