27402631 has 2 divisors, whose sum is σ = 27402632. Its totient is φ = 27402630.

The previous prime is 27402629. The next prime is 27402649. The reversal of 27402631 is 13620472.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27402631 - 2¹ = 27402629 is a prime.

It is a super-2 number, since 2×27402631² = 1501808371444322, which contains 22 as substring.

Together with 27402629, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 27402596 and 27402605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27402601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13701315 + 13701316.

It is an arithmetic number, because the mean of its divisors is an integer number (13701316).

Almost surely, 2^27402631 is an apocalyptic number.

27402631 is a deficient number, since it is larger than the sum of its proper divisors (1).

27402631 is an equidigital number, since it uses as much as digits as its factorization.

27402631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 27402631 is about 5234.7522386451. The cubic root of 27402631 is about 301.4838742158.

The spelling of 27402631 in words is "twenty-seven million, four hundred two thousand, six hundred thirty-one".