231042313 has 4 divisors (see below), whose sum is σ = 231161040. Its totient is φ = 230923588.

The previous prime is 231042293. The next prime is 231042323. The reversal of 231042313 is 313240132.

231042313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231042313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231042323) 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, 56395 + ... + 60352.

It is an arithmetic number, because the mean of its divisors is an integer number (57790260).

Almost surely, 2^231042313 is an apocalyptic number.

It is an amenable number.

231042313 is a deficient number, since it is larger than the sum of its proper divisors (118727).

231042313 is a wasteful number, since it uses less digits than its factorization.

231042313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118726.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 231042313 is about 15200.0760853359. The cubic root of 231042313 is about 613.6167054287.

Adding to 231042313 its reverse (313240132), we get a palindrome (544282445).

The spelling of 231042313 in words is "two hundred thirty-one million, forty-two thousand, three hundred thirteen".