23573971 has 2 divisors, whose sum is σ = 23573972. Its totient is φ = 23573970.

The previous prime is 23573959. The next prime is 23573987. The reversal of 23573971 is 17937532.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23573971 - 2¹⁷ = 23442899 is a prime.

It is a super-4 number, since 4×23573971⁴ (a number of 31 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23573971.

It is not a weakly prime, because it can be changed into another prime (23577971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11786985 + 11786986.

It is an arithmetic number, because the mean of its divisors is an integer number (11786986).

Almost surely, 2^23573971 is an apocalyptic number.

23573971 is a deficient number, since it is larger than the sum of its proper divisors (1).

23573971 is an equidigital number, since it uses as much as digits as its factorization.

23573971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39690, while the sum is 37.

The square root of 23573971 is about 4855.3033890788. The cubic root of 23573971 is about 286.7329359742.

It can be divided in two parts, 2357 and 3971, that added together give a triangular number (6328 = T₁₁₂).

The spelling of 23573971 in words is "twenty-three million, five hundred seventy-three thousand, nine hundred seventy-one".