23921071 has 2 divisors, whose sum is σ = 23921072. Its totient is φ = 23921070.

The previous prime is 23921063. The next prime is 23921101. The reversal of 23921071 is 17012932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23921071 - 2³ = 23921063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23921011) 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, 11960535 + 11960536.

It is an arithmetic number, because the mean of its divisors is an integer number (11960536).

Almost surely, 2^23921071 is an apocalyptic number.

23921071 is a deficient number, since it is larger than the sum of its proper divisors (1).

23921071 is an equidigital number, since it uses as much as digits as its factorization.

23921071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 23921071 is about 4890.9171941467. The cubic root of 23921071 is about 288.1333575748.

The spelling of 23921071 in words is "twenty-three million, nine hundred twenty-one thousand, seventy-one".