23891671 has 2 divisors, whose sum is σ = 23891672. Its totient is φ = 23891670.

The previous prime is 23891657. The next prime is 23891689. The reversal of 23891671 is 17619832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23891671 - 2⁵ = 23891639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23891671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23891471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11945835 + 11945836.

It is an arithmetic number, because the mean of its divisors is an integer number (11945836).

Almost surely, 2^23891671 is an apocalyptic number.

23891671 is a deficient number, since it is larger than the sum of its proper divisors (1).

23891671 is an equidigital number, since it uses as much as digits as its factorization.

23891671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The square root of 23891671 is about 4887.9106988569. The cubic root of 23891671 is about 288.0152665197.

The spelling of 23891671 in words is "twenty-three million, eight hundred ninety-one thousand, six hundred seventy-one".