23623513 has 2 divisors, whose sum is σ = 23623514. Its totient is φ = 23623512.

The previous prime is 23623511. The next prime is 23623529. The reversal of 23623513 is 31532632.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23503104 + 120409 = 4848^2 + 347^2 .

It is a cyclic number.

It is not a de Polignac number, because 23623513 - 2¹ = 23623511 is a prime.

It is a super-2 number, since 2×23623513² = 1116140732922338, which contains 22 as substring.

Together with 23623511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23623511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11811756 + 11811757.

It is an arithmetic number, because the mean of its divisors is an integer number (11811757).

Almost surely, 2^23623513 is an apocalyptic number.

It is an amenable number.

23623513 is a deficient number, since it is larger than the sum of its proper divisors (1).

23623513 is an equidigital number, since it uses as much as digits as its factorization.

23623513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 25.

The square root of 23623513 is about 4860.4025553446. The cubic root of 23623513 is about 286.9336571231.

The spelling of 23623513 in words is "twenty-three million, six hundred twenty-three thousand, five hundred thirteen".