27631091 has 2 divisors, whose sum is σ = 27631092. Its totient is φ = 27631090.

The previous prime is 27631081. The next prime is 27631133. The reversal of 27631091 is 19013672.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27631091 - 2¹⁰ = 27630067 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27631031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13815545 + 13815546.

It is an arithmetic number, because the mean of its divisors is an integer number (13815546).

Almost surely, 2^27631091 is an apocalyptic number.

27631091 is a deficient number, since it is larger than the sum of its proper divisors (1).

27631091 is an equidigital number, since it uses as much as digits as its factorization.

27631091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 27631091 is about 5256.5284171209. The cubic root of 27631091 is about 302.3193958707.

The spelling of 27631091 in words is "twenty-seven million, six hundred thirty-one thousand, ninety-one".