23719931 has 2 divisors, whose sum is σ = 23719932. Its totient is φ = 23719930.

The previous prime is 23719919. The next prime is 23719937. The reversal of 23719931 is 13991732.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23719931 - 2¹⁰ = 23718907 is a prime.

It is a super-2 number, since 2×23719931² = 1125270253289522, 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 = 23719891 and 23719900.

It is not a weakly prime, because it can be changed into another prime (23719937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11859965 + 11859966.

It is an arithmetic number, because the mean of its divisors is an integer number (11859966).

Almost surely, 2^23719931 is an apocalyptic number.

23719931 is a deficient number, since it is larger than the sum of its proper divisors (1).

23719931 is an equidigital number, since it uses as much as digits as its factorization.

23719931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10206, while the sum is 35.

The square root of 23719931 is about 4870.3111810232. The cubic root of 23719931 is about 287.3234949369.

The spelling of 23719931 in words is "twenty-three million, seven hundred nineteen thousand, nine hundred thirty-one".