23321971 has 2 divisors, whose sum is σ = 23321972. Its totient is φ = 23321970.

The previous prime is 23321939. The next prime is 23321999. The reversal of 23321971 is 17912332.

It is an a-pointer prime, because the next prime (23321999) can be obtained adding 23321971 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23321971 - 2⁵ = 23321939 is a prime.

It is not a weakly prime, because it can be changed into another prime (23325971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11660985 + 11660986.

It is an arithmetic number, because the mean of its divisors is an integer number (11660986).

Almost surely, 2^23321971 is an apocalyptic number.

23321971 is a deficient number, since it is larger than the sum of its proper divisors (1).

23321971 is an equidigital number, since it uses as much as digits as its factorization.

23321971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 28.

The square root of 23321971 is about 4829.2826589464. The cubic root of 23321971 is about 285.7075719018.

The spelling of 23321971 in words is "twenty-three million, three hundred twenty-one thousand, nine hundred seventy-one".