23452981 has 2 divisors, whose sum is σ = 23452982. Its totient is φ = 23452980.

The previous prime is 23452937. The next prime is 23452987. The reversal of 23452981 is 18925432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19000881 + 4452100 = 4359^2 + 2110^2 .

It is a cyclic number.

It is not a de Polignac number, because 23452981 - 2¹⁵ = 23420213 is a prime.

It is a super-2 number, since 2×23452981² = 1100084635572722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23452987) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11726490 + 11726491.

It is an arithmetic number, because the mean of its divisors is an integer number (11726491).

Almost surely, 2^23452981 is an apocalyptic number.

It is an amenable number.

23452981 is a deficient number, since it is larger than the sum of its proper divisors (1).

23452981 is an equidigital number, since it uses as much as digits as its factorization.

23452981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 23452981 is about 4842.8277896287. The cubic root of 23452981 is about 286.2415559124.

The spelling of 23452981 in words is "twenty-three million, four hundred fifty-two thousand, nine hundred eighty-one".