23947613 has 2 divisors, whose sum is σ = 23947614. Its totient is φ = 23947612.

The previous prime is 23947607. The next prime is 23947631. The reversal of 23947613 is 31674932.

Together with next prime (23947631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18292729 + 5654884 = 4277^2 + 2378^2 .

It is a cyclic number.

It is not a de Polignac number, because 23947613 - 2⁴ = 23947597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23947643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11973806 + 11973807.

It is an arithmetic number, because the mean of its divisors is an integer number (11973807).

Almost surely, 2^23947613 is an apocalyptic number.

It is an amenable number.

23947613 is a deficient number, since it is larger than the sum of its proper divisors (1).

23947613 is an equidigital number, since it uses as much as digits as its factorization.

23947613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 35.

The square root of 23947613 is about 4893.6298388824. The cubic root of 23947613 is about 288.2398858151.

The spelling of 23947613 in words is "twenty-three million, nine hundred forty-seven thousand, six hundred thirteen".