23890931 has 2 divisors, whose sum is σ = 23890932. Its totient is φ = 23890930.

The previous prime is 23890921. The next prime is 23890939. The reversal of 23890931 is 13909832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23890931 - 2¹⁴ = 23874547 is a prime.

It is a super-2 number, since 2×23890931² = 1141553168093522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 23890891 and 23890900.

It is not a weakly prime, because it can be changed into another prime (23890939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11945465 + 11945466.

It is an arithmetic number, because the mean of its divisors is an integer number (11945466).

Almost surely, 2^23890931 is an apocalyptic number.

23890931 is a deficient number, since it is larger than the sum of its proper divisors (1).

23890931 is an equidigital number, since it uses as much as digits as its factorization.

23890931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 23890931 is about 4887.8350013068. The cubic root of 23890931 is about 288.0122929102.

The spelling of 23890931 in words is "twenty-three million, eight hundred ninety thousand, nine hundred thirty-one".