23820971 has 2 divisors, whose sum is σ = 23820972. Its totient is φ = 23820970.

The previous prime is 23820967. The next prime is 23821001. The reversal of 23820971 is 17902832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23820971 - 2² = 23820967 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23820931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11910485 + 11910486.

It is an arithmetic number, because the mean of its divisors is an integer number (11910486).

Almost surely, 2^23820971 is an apocalyptic number.

23820971 is a deficient number, since it is larger than the sum of its proper divisors (1).

23820971 is an equidigital number, since it uses as much as digits as its factorization.

23820971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 23820971 is about 4880.6732117609. The cubic root of 23820971 is about 287.7308885021.

The spelling of 23820971 in words is "twenty-three million, eight hundred twenty thousand, nine hundred seventy-one".