23708431 has 2 divisors, whose sum is σ = 23708432. Its totient is φ = 23708430.

The previous prime is 23708407. The next prime is 23708441. The reversal of 23708431 is 13480732.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23708431 - 2⁷ = 23708303 is a prime.

It is a super-2 number, since 2×23708431² = 1124179400963522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23708431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23708401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11854215 + 11854216.

It is an arithmetic number, because the mean of its divisors is an integer number (11854216).

Almost surely, 2^23708431 is an apocalyptic number.

23708431 is a deficient number, since it is larger than the sum of its proper divisors (1).

23708431 is an equidigital number, since it uses as much as digits as its factorization.

23708431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 23708431 is about 4869.1304151768. The cubic root of 23708431 is about 287.2770536225.

It can be divided in two parts, 2370 and 8431, that added together give a palindrome (10801).

The spelling of 23708431 in words is "twenty-three million, seven hundred eight thousand, four hundred thirty-one".