423135023 has 2 divisors, whose sum is σ = 423135024. Its totient is φ = 423135022.

The previous prime is 423135019. The next prime is 423135059. The reversal of 423135023 is 320531324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423135023 - 2² = 423135019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 423135023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423335023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211567511 + 211567512.

It is an arithmetic number, because the mean of its divisors is an integer number (211567512).

Almost surely, 2^423135023 is an apocalyptic number.

423135023 is a deficient number, since it is larger than the sum of its proper divisors (1).

423135023 is an equidigital number, since it uses as much as digits as its factorization.

423135023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 423135023 is about 20570.2460607548. The cubic root of 423135023 is about 750.7459381520.

Adding to 423135023 its reverse (320531324), we get a palindrome (743666347).

The spelling of 423135023 in words is "four hundred twenty-three million, one hundred thirty-five thousand, twenty-three".