231234231 has 16 divisors (see below), whose sum is σ = 310765824. Its totient is φ = 152935104.

The previous prime is 231234229. The next prime is 231234233. The reversal of 231234231 is 132432132.

It is an interprime number because it is at equal distance from previous prime (231234229) and next prime (231234233).

It is not a de Polignac number, because 231234231 - 2¹ = 231234229 is a prime.

It is a super-2 number, since 2×231234231² = 106938539172322722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231234198 and 231234207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231234233) 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, 310846 + ... + 311588.

It is an arithmetic number, because the mean of its divisors is an integer number (19422864).

Almost surely, 2^231234231 is an apocalyptic number.

231234231 is a deficient number, since it is larger than the sum of its proper divisors (79531593).

231234231 is a wasteful number, since it uses less digits than its factorization.

231234231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430.

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

The square root of 231234231 is about 15206.3878353802. The cubic root of 231234231 is about 613.7865610380.

Adding to 231234231 its reverse (132432132), we get a palindrome (363666363).

The spelling of 231234231 in words is "two hundred thirty-one million, two hundred thirty-four thousand, two hundred thirty-one".