65393431 has 2 divisors, whose sum is σ = 65393432. Its totient is φ = 65393430.

The previous prime is 65393389. The next prime is 65393527. The reversal of 65393431 is 13439356.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65393431 - 2²³ = 57004823 is a prime.

It is a super-2 number, since 2×65393431² = 8552601635903522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65390431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32696715 + 32696716.

It is an arithmetic number, because the mean of its divisors is an integer number (32696716).

Almost surely, 2^65393431 is an apocalyptic number.

65393431 is a deficient number, since it is larger than the sum of its proper divisors (1).

65393431 is an equidigital number, since it uses as much as digits as its factorization.

65393431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 34.

The square root of 65393431 is about 8086.6204931356. The cubic root of 65393431 is about 402.8821641952.

The spelling of 65393431 in words is "sixty-five million, three hundred ninety-three thousand, four hundred thirty-one".