423154231 has 2 divisors, whose sum is σ = 423154232. Its totient is φ = 423154230.

The previous prime is 423154223. The next prime is 423154343. The reversal of 423154231 is 132451324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423154231 - 2³ = 423154223 is a prime.

It is a super-2 number, since 2×423154231² = 358119006426402722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 423154196 and 423154205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423154201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211577115 + 211577116.

It is an arithmetic number, because the mean of its divisors is an integer number (211577116).

Almost surely, 2^423154231 is an apocalyptic number.

423154231 is a deficient number, since it is larger than the sum of its proper divisors (1).

423154231 is an equidigital number, since it uses as much as digits as its factorization.

423154231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 25.

The square root of 423154231 is about 20570.7129434057. The cubic root of 423154231 is about 750.7572978907.

The spelling of 423154231 in words is "four hundred twenty-three million, one hundred fifty-four thousand, two hundred thirty-one".