231031314 has 12 divisors (see below), whose sum is σ = 500567886. Its totient is φ = 77010432.

The previous prime is 231031301. The next prime is 231031319. The reversal of 231031314 is 413130132.

It can be written as a sum of positive squares in only one way, i.e., 185913225 + 45118089 = 13635^2 + 6717^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 12835073 = 231031314 / (2 + 3 + 1 + 0 + 3 + 1 + 3 + 1 + 4).

It is not an unprimeable number, because it can be changed into a prime (231031319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6417519 + ... + 6417554.

Almost surely, 2^231031314 is an apocalyptic number.

231031314 is an abundant number, since it is smaller than the sum of its proper divisors (269536572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231031314 is a wasteful number, since it uses less digits than its factorization.

231031314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12835081 (or 12835078 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 231031314 is about 15199.7142736303. The cubic root of 231031314 is about 613.6069679955.

Adding to 231031314 its reverse (413130132), we get a palindrome (644161446).

The spelling of 231031314 in words is "two hundred thirty-one million, thirty-one thousand, three hundred fourteen".