423356231 has 2 divisors, whose sum is σ = 423356232. Its totient is φ = 423356230.

The previous prime is 423356161. The next prime is 423356249. The reversal of 423356231 is 132653324.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423356231 is a prime.

It is a super-2 number, since 2×423356231² = 358460996653050722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 423356194 and 423356203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423358231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211678115 + 211678116.

It is an arithmetic number, because the mean of its divisors is an integer number (211678116).

Almost surely, 2^423356231 is an apocalyptic number.

423356231 is a deficient number, since it is larger than the sum of its proper divisors (1).

423356231 is an equidigital number, since it uses as much as digits as its factorization.

423356231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 29.

The square root of 423356231 is about 20575.6222506149. The cubic root of 423356231 is about 750.8767412189.

The spelling of 423356231 in words is "four hundred twenty-three million, three hundred fifty-six thousand, two hundred thirty-one".