23712431 has 2 divisors, whose sum is σ = 23712432. Its totient is φ = 23712430.

The previous prime is 23712421. The next prime is 23712443. The reversal of 23712431 is 13421732.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23712431 is a prime.

It is a super-2 number, since 2×23712431² = 1124558767859522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 23712397 and 23712406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23712421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11856215 + 11856216.

It is an arithmetic number, because the mean of its divisors is an integer number (11856216).

Almost surely, 2^23712431 is an apocalyptic number.

23712431 is a deficient number, since it is larger than the sum of its proper divisors (1).

23712431 is an equidigital number, since it uses as much as digits as its factorization.

23712431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 23.

The square root of 23712431 is about 4869.5411488147. The cubic root of 23712431 is about 287.2932088262.

The spelling of 23712431 in words is "twenty-three million, seven hundred twelve thousand, four hundred thirty-one".