64293431 has 2 divisors, whose sum is σ = 64293432. Its totient is φ = 64293430.

The previous prime is 64293413. The next prime is 64293479. The reversal of 64293431 is 13439246.

Together with previous prime (64293413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64293431 - 2⁶ = 64293367 is a prime.

It is a super-2 number, since 2×64293431² = 8267290539503522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64293631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32146715 + 32146716.

It is an arithmetic number, because the mean of its divisors is an integer number (32146716).

Almost surely, 2^64293431 is an apocalyptic number.

64293431 is a deficient number, since it is larger than the sum of its proper divisors (1).

64293431 is an equidigital number, since it uses as much as digits as its factorization.

64293431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 32.

The square root of 64293431 is about 8018.3184646159. The cubic root of 64293431 is about 400.6103826920.

The spelling of 64293431 in words is "sixty-four million, two hundred ninety-three thousand, four hundred thirty-one".