423512239 has 2 divisors, whose sum is σ = 423512240. Its totient is φ = 423512238.

The previous prime is 423512227. The next prime is 423512303. The reversal of 423512239 is 932215324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423512239 - 2¹⁵ = 423479471 is a prime.

It is equal to p_22521487 and since 423512239 and 22521487 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 423512239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423512039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211756119 + 211756120.

It is an arithmetic number, because the mean of its divisors is an integer number (211756120).

Almost surely, 2^423512239 is an apocalyptic number.

423512239 is a deficient number, since it is larger than the sum of its proper divisors (1).

423512239 is an equidigital number, since it uses as much as digits as its factorization.

423512239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 31.

The square root of 423512239 is about 20579.4129896846. The cubic root of 423512239 is about 750.9689633114.

The spelling of 423512239 in words is "four hundred twenty-three million, five hundred twelve thousand, two hundred thirty-nine".