23997011 has 4 divisors (see below), whose sum is σ = 24403800. Its totient is φ = 23590224.

The previous prime is 23996977. The next prime is 23997067. The reversal of 23997011 is 11079932.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23997011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23997091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203306 + ... + 203423.

It is an arithmetic number, because the mean of its divisors is an integer number (6100950).

Almost surely, 2^23997011 is an apocalyptic number.

23997011 is a deficient number, since it is larger than the sum of its proper divisors (406789).

23997011 is an equidigital number, since it uses as much as digits as its factorization.

23997011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406788.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 23997011 is about 4898.6744125324. The cubic root of 23997011 is about 288.4379388866.

The spelling of 23997011 in words is "twenty-three million, nine hundred ninety-seven thousand, eleven".