23481439 has 2 divisors, whose sum is σ = 23481440. Its totient is φ = 23481438.

The previous prime is 23481379. The next prime is 23481457. The reversal of 23481439 is 93418432.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23481439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23481499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11740719 + 11740720.

It is an arithmetic number, because the mean of its divisors is an integer number (11740720).

Almost surely, 2^23481439 is an apocalyptic number.

23481439 is a deficient number, since it is larger than the sum of its proper divisors (1).

23481439 is an equidigital number, since it uses as much as digits as its factorization.

23481439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The square root of 23481439 is about 4845.7650582751. The cubic root of 23481439 is about 286.3572849061.

The spelling of 23481439 in words is "twenty-three million, four hundred eighty-one thousand, four hundred thirty-nine".