423345231 has 16 divisors (see below), whose sum is σ = 644130400. Its totient is φ = 274601664.

The previous prime is 423345217. The next prime is 423345253. The reversal of 423345231 is 132543324.

423345231 is a `hidden beast` number, since 423 + 3 + 4 + 5 + 231 = 666.

It is not a de Polignac number, because 423345231 - 2¹¹ = 423343183 is a prime.

It is a super-2 number, since 2×423345231² = 358442369220886722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 423345195 and 423345204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423345281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210886 + ... + 212883.

It is an arithmetic number, because the mean of its divisors is an integer number (40258150).

Almost surely, 2^423345231 is an apocalyptic number.

423345231 is a deficient number, since it is larger than the sum of its proper divisors (220785169).

423345231 is a wasteful number, since it uses less digits than its factorization.

423345231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423815 (or 423809 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 423345231 is about 20575.3549422604. The cubic root of 423345231 is about 750.8702378576.

Adding to 423345231 its reverse (132543324), we get a palindrome (555888555).

The spelling of 423345231 in words is "four hundred twenty-three million, three hundred forty-five thousand, two hundred thirty-one".