23815973 has 2 divisors, whose sum is σ = 23815974. Its totient is φ = 23815972.

The previous prime is 23815951. The next prime is 23815991. The reversal of 23815973 is 37951832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22486564 + 1329409 = 4742^2 + 1153^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23815973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23815573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11907986 + 11907987.

It is an arithmetic number, because the mean of its divisors is an integer number (11907987).

Almost surely, 2^23815973 is an apocalyptic number.

It is an amenable number.

23815973 is a deficient number, since it is larger than the sum of its proper divisors (1).

23815973 is an equidigital number, since it uses as much as digits as its factorization.

23815973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 23815973 is about 4880.1611653715. The cubic root of 23815973 is about 287.7107636638.

The spelling of 23815973 in words is "twenty-three million, eight hundred fifteen thousand, nine hundred seventy-three".