231343313 has 4 divisors (see below), whose sum is σ = 231564900. Its totient is φ = 231121728.

The previous prime is 231343291. The next prime is 231343337. The reversal of 231343313 is 313343132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 221652544 + 9690769 = 14888^2 + 3113^2 .

It is a cyclic number.

It is not a de Polignac number, because 231343313 - 2¹⁰ = 231342289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231343213) 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, 109220 + ... + 111317.

It is an arithmetic number, because the mean of its divisors is an integer number (57891225).

Almost surely, 2^231343313 is an apocalyptic number.

It is an amenable number.

231343313 is a deficient number, since it is larger than the sum of its proper divisors (221587).

231343313 is a wasteful number, since it uses less digits than its factorization.

231343313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221586.

The product of its digits is 1944, while the sum is 23.

The square root of 231343313 is about 15209.9741288406. The cubic root of 231343313 is about 613.8830613702.

Adding to 231343313 its reverse (313343132), we get a palindrome (544686445).

The spelling of 231343313 in words is "two hundred thirty-one million, three hundred forty-three thousand, three hundred thirteen".