23089931 has 2 divisors, whose sum is σ = 23089932. Its totient is φ = 23089930.

The previous prime is 23089919. The next prime is 23089939. The reversal of 23089931 is 13998032.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23089931 is a prime.

It is a super-2 number, since 2×23089931² = 1066289827169522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 23089891 and 23089900.

It is not a weakly prime, because it can be changed into another prime (23089939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11544965 + 11544966.

It is an arithmetic number, because the mean of its divisors is an integer number (11544966).

Almost surely, 2^23089931 is an apocalyptic number.

23089931 is a deficient number, since it is larger than the sum of its proper divisors (1).

23089931 is an equidigital number, since it uses as much as digits as its factorization.

23089931 is an evil number, because the sum of its binary digits is even.

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

The square root of 23089931 is about 4805.1983309745. The cubic root of 23089931 is about 284.7568707243.

The spelling of 23089931 in words is "twenty-three million, eighty-nine thousand, nine hundred thirty-one".