23391427 has 2 divisors, whose sum is σ = 23391428. Its totient is φ = 23391426.

The previous prime is 23391421. The next prime is 23391457. The reversal of 23391427 is 72419332.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23391427 - 2¹⁹ = 22867139 is a prime.

It is not a weakly prime, because it can be changed into another prime (23391421) 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, 11695713 + 11695714.

It is an arithmetic number, because the mean of its divisors is an integer number (11695714).

Almost surely, 2^23391427 is an apocalyptic number.

23391427 is a deficient number, since it is larger than the sum of its proper divisors (1).

23391427 is an equidigital number, since it uses as much as digits as its factorization.

23391427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 31.

The square root of 23391427 is about 4836.4684429861. The cubic root of 23391427 is about 285.9909161377.

The spelling of 23391427 in words is "twenty-three million, three hundred ninety-one thousand, four hundred twenty-seven".