231243313 has 8 divisors (see below), whose sum is σ = 266617728. Its totient is φ = 196453824.

The previous prime is 231243301. The next prime is 231243317. The reversal of 231243313 is 313342132.

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

It is a de Polignac number, because none of the positive numbers 2^k-231243313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231243317) 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, 145381 + ... + 146962.

It is an arithmetic number, because the mean of its divisors is an integer number (33327216).

Almost surely, 2^231243313 is an apocalyptic number.

It is an amenable number.

231243313 is a deficient number, since it is larger than the sum of its proper divisors (35374415).

231243313 is a wasteful number, since it uses less digits than its factorization.

231243313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292463.

The product of its digits is 1296, while the sum is 22.

The square root of 231243313 is about 15206.6864569504. The cubic root of 231243313 is about 613.7945966657.

Adding to 231243313 its reverse (313342132), we get a palindrome (544585445).

The spelling of 231243313 in words is "two hundred thirty-one million, two hundred forty-three thousand, three hundred thirteen".