431223231 has 8 divisors (see below), whose sum is σ = 576997120. Its totient is φ = 286465752.

The previous prime is 431223229. The next prime is 431223239. The reversal of 431223231 is 132322134.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 431223231 - 2¹ = 431223229 is a prime.

It is a super-2 number, since 2×431223231² = 371906949908158722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431223198 and 431223207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431223239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253111 + ... + 254808.

It is an arithmetic number, because the mean of its divisors is an integer number (72124640).

Almost surely, 2^431223231 is an apocalyptic number.

431223231 is a deficient number, since it is larger than the sum of its proper divisors (145773889).

431223231 is a wasteful number, since it uses less digits than its factorization.

431223231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508205.

The product of its digits is 864, while the sum is 21.

The square root of 431223231 is about 20765.9151255128. The cubic root of 431223231 is about 755.4992712454.

Adding to 431223231 its reverse (132322134), we get a palindrome (563545365).

The spelling of 431223231 in words is "four hundred thirty-one million, two hundred twenty-three thousand, two hundred thirty-one".