27712931 has 2 divisors, whose sum is σ = 27712932. Its totient is φ = 27712930.

The previous prime is 27712921. The next prime is 27712943. The reversal of 27712931 is 13921772.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27712931 is a prime.

It is a super-2 number, since 2×27712931² = 1536013089221522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27712901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13856465 + 13856466.

It is an arithmetic number, because the mean of its divisors is an integer number (13856466).

Almost surely, 2^27712931 is an apocalyptic number.

27712931 is a deficient number, since it is larger than the sum of its proper divisors (1).

27712931 is an equidigital number, since it uses as much as digits as its factorization.

27712931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 32.

The square root of 27712931 is about 5264.3072668681. The cubic root of 27712931 is about 302.6175796815.

The spelling of 27712931 in words is "twenty-seven million, seven hundred twelve thousand, nine hundred thirty-one".