23951971 has 2 divisors, whose sum is σ = 23951972. Its totient is φ = 23951970.

The previous prime is 23951969. The next prime is 23952001. The reversal of 23951971 is 17915932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23951971 - 2¹ = 23951969 is a prime.

Together with 23951969, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 23951971.

It is not a weakly prime, because it can be changed into another prime (23951171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11975985 + 11975986.

It is an arithmetic number, because the mean of its divisors is an integer number (11975986).

Almost surely, 2^23951971 is an apocalyptic number.

23951971 is a deficient number, since it is larger than the sum of its proper divisors (1).

23951971 is an equidigital number, since it uses as much as digits as its factorization.

23951971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 37.

The square root of 23951971 is about 4894.0750913732. The cubic root of 23951971 is about 288.2573694397.

The spelling of 23951971 in words is "twenty-three million, nine hundred fifty-one thousand, nine hundred seventy-one".