23711971 has 2 divisors, whose sum is σ = 23711972. Its totient is φ = 23711970.

The previous prime is 23711959. The next prime is 23711977. The reversal of 23711971 is 17911732.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23711971 - 2²¹ = 21614819 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23711977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11855985 + 11855986.

It is an arithmetic number, because the mean of its divisors is an integer number (11855986).

Almost surely, 2^23711971 is an apocalyptic number.

23711971 is a deficient number, since it is larger than the sum of its proper divisors (1).

23711971 is an equidigital number, since it uses as much as digits as its factorization.

23711971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2646, while the sum is 31.

The square root of 23711971 is about 4869.4939162094. The cubic root of 23711971 is about 287.2913510702.

The spelling of 23711971 in words is "twenty-three million, seven hundred eleven thousand, nine hundred seventy-one".