23921423 has 2 divisors, whose sum is σ = 23921424. Its totient is φ = 23921422.

The previous prime is 23921407. The next prime is 23921453. The reversal of 23921423 is 32412932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23921423 - 2⁴ = 23921407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23921392 and 23921401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23921453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11960711 + 11960712.

It is an arithmetic number, because the mean of its divisors is an integer number (11960712).

Almost surely, 2^23921423 is an apocalyptic number.

23921423 is a deficient number, since it is larger than the sum of its proper divisors (1).

23921423 is an equidigital number, since it uses as much as digits as its factorization.

23921423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 26.

The square root of 23921423 is about 4890.9531790848. The cubic root of 23921423 is about 288.1347708677.

The spelling of 23921423 in words is "twenty-three million, nine hundred twenty-one thousand, four hundred twenty-three".