23401513 has 2 divisors, whose sum is σ = 23401514. Its totient is φ = 23401512.

The previous prime is 23401487. The next prime is 23401517. The reversal of 23401513 is 31510432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13741849 + 9659664 = 3707^2 + 3108^2 .

It is a cyclic number.

It is not a de Polignac number, because 23401513 - 2⁵ = 23401481 is a prime.

It is not a weakly prime, because it can be changed into another prime (23401517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11700756 + 11700757.

It is an arithmetic number, because the mean of its divisors is an integer number (11700757).

Almost surely, 2^23401513 is an apocalyptic number.

It is an amenable number.

23401513 is a deficient number, since it is larger than the sum of its proper divisors (1).

23401513 is an equidigital number, since it uses as much as digits as its factorization.

23401513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 23401513 is about 4837.5110335791. The cubic root of 23401513 is about 286.0320150967.

Adding to 23401513 its reverse (31510432), we get a palindrome (54911945).

The spelling of 23401513 in words is "twenty-three million, four hundred one thousand, five hundred thirteen".