23372981 has 2 divisors, whose sum is σ = 23372982. Its totient is φ = 23372980.

The previous prime is 23372963. The next prime is 23373001. The reversal of 23372981 is 18927332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15760900 + 7612081 = 3970^2 + 2759^2 .

It is a cyclic number.

It is not a de Polignac number, because 23372981 - 2⁶ = 23372917 is a prime.

It is a super-2 number, since 2×23372981² = 1092592481652722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23372281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11686490 + 11686491.

It is an arithmetic number, because the mean of its divisors is an integer number (11686491).

Almost surely, 2^23372981 is an apocalyptic number.

It is an amenable number.

23372981 is a deficient number, since it is larger than the sum of its proper divisors (1).

23372981 is an equidigital number, since it uses as much as digits as its factorization.

23372981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 23372981 is about 4834.5610969353. The cubic root of 23372981 is about 285.9157208431.

The spelling of 23372981 in words is "twenty-three million, three hundred seventy-two thousand, nine hundred eighty-one".