23313431 has 2 divisors, whose sum is σ = 23313432. Its totient is φ = 23313430.

The previous prime is 23313413. The next prime is 23313449. The reversal of 23313431 is 13431332.

Together with previous prime (23313413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (23313413) and next prime (23313449).

It is a cyclic number.

It is not a de Polignac number, because 23313431 - 2¹⁴ = 23297047 is a prime.

It is a super-2 number, since 2×23313431² = 1087032129983522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23313491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11656715 + 11656716.

It is an arithmetic number, because the mean of its divisors is an integer number (11656716).

Almost surely, 2^23313431 is an apocalyptic number.

23313431 is a deficient number, since it is larger than the sum of its proper divisors (1).

23313431 is an equidigital number, since it uses as much as digits as its factorization.

23313431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 20.

The square root of 23313431 is about 4828.3983886999. The cubic root of 23313431 is about 285.6726943387.

Adding to 23313431 its reverse (13431332), we get a palindrome (36744763).

The spelling of 23313431 in words is "twenty-three million, three hundred thirteen thousand, four hundred thirty-one".