231134312 has 16 divisors (see below), whose sum is σ = 458869860. Its totient is φ = 108769024.

The previous prime is 231134269. The next prime is 231134317. The reversal of 231134312 is 213431132.

231134312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 230857636 + 276676 = 15194^2 + 526^2 .

It is not an unprimeable number, because it can be changed into a prime (231134317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 849623 + ... + 849894.

Almost surely, 2^231134312 is an apocalyptic number.

It is an amenable number.

231134312 is a deficient number, since it is larger than the sum of its proper divisors (227735548).

231134312 is a wasteful number, since it uses less digits than its factorization.

231134312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699540 (or 1699536 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 231134312 is about 15203.1020518840. The cubic root of 231134312 is about 613.6981401975.

Adding to 231134312 its reverse (213431132), we get a palindrome (444565444).

The spelling of 231134312 in words is "two hundred thirty-one million, one hundred thirty-four thousand, three hundred twelve".