27097931 has 12 divisors (see below), whose sum is σ = 31970160. Its totient is φ = 22896720.

The previous prime is 27097927. The next prime is 27097951. The reversal of 27097931 is 13979072.

It is not a de Polignac number, because 27097931 - 2² = 27097927 is a prime.

It is a super-2 number, since 2×27097931² = 1468595728961522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27097901) 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, 416 + ... + 7373.

It is an arithmetic number, because the mean of its divisors is an integer number (2664180).

Almost surely, 2^27097931 is an apocalyptic number.

27097931 is a deficient number, since it is larger than the sum of its proper divisors (4872229).

27097931 is an equidigital number, since it uses as much as digits as its factorization.

27097931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7874 (or 7867 counting only the distinct ones).

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 27097931 is about 5205.5673081807. The cubic root of 27097931 is about 300.3622697667.

The spelling of 27097931 in words is "twenty-seven million, ninety-seven thousand, nine hundred thirty-one".