23404813 has 2 divisors, whose sum is σ = 23404814. Its totient is φ = 23404812.

The previous prime is 23404781. The next prime is 23404817. The reversal of 23404813 is 31840432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22867524 + 537289 = 4782^2 + 733^2 .

It is a cyclic number.

It is not a de Polignac number, because 23404813 - 2⁵ = 23404781 is a prime.

It is equal to p_1472092 and since 23404813 and 1472092 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23404817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11702406 + 11702407.

It is an arithmetic number, because the mean of its divisors is an integer number (11702407).

Almost surely, 2^23404813 is an apocalyptic number.

It is an amenable number.

23404813 is a deficient number, since it is larger than the sum of its proper divisors (1).

23404813 is an equidigital number, since it uses as much as digits as its factorization.

23404813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 23404813 is about 4837.8521060487. The cubic root of 23404813 is about 286.0454595448.

The spelling of 23404813 in words is "twenty-three million, four hundred four thousand, eight hundred thirteen".