23351431 has 2 divisors, whose sum is σ = 23351432. Its totient is φ = 23351430.

The previous prime is 23351423. The next prime is 23351441. The reversal of 23351431 is 13415332.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23351431 - 2³ = 23351423 is a prime.

It is a super-2 number, since 2×23351431² = 1090578659495522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23351411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11675715 + 11675716.

It is an arithmetic number, because the mean of its divisors is an integer number (11675716).

Almost surely, 2^23351431 is an apocalyptic number.

23351431 is a deficient number, since it is larger than the sum of its proper divisors (1).

23351431 is an equidigital number, since it uses as much as digits as its factorization.

23351431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 22.

The square root of 23351431 is about 4832.3318387710. The cubic root of 23351431 is about 285.8278219369.

Adding to 23351431 its reverse (13415332), we get a palindrome (36766763).

The spelling of 23351431 in words is "twenty-three million, three hundred fifty-one thousand, four hundred thirty-one".