23971613 has 2 divisors, whose sum is σ = 23971614. Its totient is φ = 23971612.

The previous prime is 23971583. The next prime is 23971621. The reversal of 23971613 is 31617932.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20448484 + 3523129 = 4522^2 + 1877^2 .

It is a cyclic number.

It is not a de Polignac number, because 23971613 - 2¹⁴ = 23955229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23971613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23971663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11985806 + 11985807.

It is an arithmetic number, because the mean of its divisors is an integer number (11985807).

Almost surely, 2^23971613 is an apocalyptic number.

It is an amenable number.

23971613 is a deficient number, since it is larger than the sum of its proper divisors (1).

23971613 is an equidigital number, since it uses as much as digits as its factorization.

23971613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 32.

The square root of 23971613 is about 4896.0813922973. The cubic root of 23971613 is about 288.3361438093.

The spelling of 23971613 in words is "twenty-three million, nine hundred seventy-one thousand, six hundred thirteen".