27422431 has 2 divisors, whose sum is σ = 27422432. Its totient is φ = 27422430.

The previous prime is 27422393. The next prime is 27422441. The reversal of 27422431 is 13422472.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27422431 - 2¹¹ = 27420383 is a prime.

It is a super-2 number, since 2×27422431² = 1503979443899522, which contains 22 as substring.

It is equal to p_1707712 and since 27422431 and 1707712 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 27422396 and 27422405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27422441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13711215 + 13711216.

It is an arithmetic number, because the mean of its divisors is an integer number (13711216).

Almost surely, 2^27422431 is an apocalyptic number.

27422431 is a deficient number, since it is larger than the sum of its proper divisors (1).

27422431 is an equidigital number, since it uses as much as digits as its factorization.

27422431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 25.

The square root of 27422431 is about 5236.6431041269. The cubic root of 27422431 is about 301.5564699645.

The spelling of 27422431 in words is "twenty-seven million, four hundred twenty-two thousand, four hundred thirty-one".