23724971 has 2 divisors, whose sum is σ = 23724972. Its totient is φ = 23724970.

The previous prime is 23724959. The next prime is 23724991. The reversal of 23724971 is 17942732.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23724971 is a prime.

It is a Chen prime.

It is equal to p_1490948 and since 23724971 and 1490948 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (23724931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11862485 + 11862486.

It is an arithmetic number, because the mean of its divisors is an integer number (11862486).

Almost surely, 2^23724971 is an apocalyptic number.

23724971 is a deficient number, since it is larger than the sum of its proper divisors (1).

23724971 is an equidigital number, since it uses as much as digits as its factorization.

23724971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 35.

The square root of 23724971 is about 4870.8285742777. The cubic root of 23724971 is about 287.3438436170.

The spelling of 23724971 in words is "twenty-three million, seven hundred twenty-four thousand, nine hundred seventy-one".