23977013 has 2 divisors, whose sum is σ = 23977014. Its totient is φ = 23977012.

The previous prime is 23977001. The next prime is 23977039. The reversal of 23977013 is 31077932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20729809 + 3247204 = 4553^2 + 1802^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23977013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23979013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11988506 + 11988507.

It is an arithmetic number, because the mean of its divisors is an integer number (11988507).

Almost surely, 2^23977013 is an apocalyptic number.

It is an amenable number.

23977013 is a deficient number, since it is larger than the sum of its proper divisors (1).

23977013 is an equidigital number, since it uses as much as digits as its factorization.

23977013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7938, while the sum is 32.

The square root of 23977013 is about 4896.6328226650. The cubic root of 23977013 is about 288.3577930030.

The spelling of 23977013 in words is "twenty-three million, nine hundred seventy-seven thousand, thirteen".