23997211 has 24 divisors (see below), whose sum is σ = 29548800. Its totient is φ = 19392912.

The previous prime is 23997203. The next prime is 23997229. The reversal of 23997211 is 11279932.

It is a happy number.

It is not a de Polignac number, because 23997211 - 2³ = 23997203 is a prime.

It is a super-2 number, since 2×23997211² = 1151732271557042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23997271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120490 + ... + 120688.

It is an arithmetic number, because the mean of its divisors is an integer number (1231200).

Almost surely, 2^23997211 is an apocalyptic number.

23997211 is a deficient number, since it is larger than the sum of its proper divisors (5551589).

23997211 is a wasteful number, since it uses less digits than its factorization.

23997211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343 (or 336 counting only the distinct ones).

The product of its digits is 6804, while the sum is 34.

The square root of 23997211 is about 4898.6948261756. The cubic root of 23997211 is about 288.4387402007.

The spelling of 23997211 in words is "twenty-three million, nine hundred ninety-seven thousand, two hundred eleven".