423502231 has 2 divisors, whose sum is σ = 423502232. Its totient is φ = 423502230.

The previous prime is 423502223. The next prime is 423502237. The reversal of 423502231 is 132205324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423502231 - 2³ = 423502223 is a prime.

It is a super-2 number, since 2×423502231² = 358708279323954722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423502237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211751115 + 211751116.

It is an arithmetic number, because the mean of its divisors is an integer number (211751116).

Almost surely, 2^423502231 is an apocalyptic number.

423502231 is a deficient number, since it is larger than the sum of its proper divisors (1).

423502231 is an equidigital number, since it uses as much as digits as its factorization.

423502231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 423502231 is about 20579.1698326244. The cubic root of 423502231 is about 750.9630478927.

Adding to 423502231 its reverse (132205324), we get a palindrome (555707555).

The spelling of 423502231 in words is "four hundred twenty-three million, five hundred two thousand, two hundred thirty-one".