23502013 has 2 divisors, whose sum is σ = 23502014. Its totient is φ = 23502012.

The previous prime is 23501987. The next prime is 23502023. The reversal of 23502013 is 31020532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15784729 + 7717284 = 3973^2 + 2778^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23502013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23502023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11751006 + 11751007.

It is an arithmetic number, because the mean of its divisors is an integer number (11751007).

Almost surely, 2^23502013 is an apocalyptic number.

It is an amenable number.

23502013 is a deficient number, since it is larger than the sum of its proper divisors (1).

23502013 is an equidigital number, since it uses as much as digits as its factorization.

23502013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 23502013 is about 4847.8874780671. The cubic root of 23502013 is about 286.4408941338.

Adding to 23502013 its reverse (31020532), we get a palindrome (54522545).

The spelling of 23502013 in words is "twenty-three million, five hundred two thousand, thirteen".