23856971 has 4 divisors (see below), whose sum is σ = 24501792. Its totient is φ = 23212152.

The previous prime is 23856961. The next prime is 23856977. The reversal of 23856971 is 17965832.

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

It is a cyclic number.

It is not a de Polignac number, because 23856971 - 2¹⁴ = 23840587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23856977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322355 + ... + 322428.

It is an arithmetic number, because the mean of its divisors is an integer number (6125448).

Almost surely, 2^23856971 is an apocalyptic number.

23856971 is a deficient number, since it is larger than the sum of its proper divisors (644821).

23856971 is an equidigital number, since it uses as much as digits as its factorization.

23856971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644820.

The product of its digits is 90720, while the sum is 41.

The square root of 23856971 is about 4884.3598352292. The cubic root of 23856971 is about 287.8757622253.

The spelling of 23856971 in words is "twenty-three million, eight hundred fifty-six thousand, nine hundred seventy-one".