231315343 has 4 divisors (see below), whose sum is σ = 264360400. Its totient is φ = 198270288.

The previous prime is 231315323. The next prime is 231315377. The reversal of 231315343 is 343513132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231315343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231315313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16522518 + ... + 16522531.

It is an arithmetic number, because the mean of its divisors is an integer number (66090100).

Almost surely, 2^231315343 is an apocalyptic number.

231315343 is a deficient number, since it is larger than the sum of its proper divisors (33045057).

231315343 is an equidigital number, since it uses as much as digits as its factorization.

231315343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33045056.

The product of its digits is 3240, while the sum is 25.

The square root of 231315343 is about 15209.0546386026. The cubic root of 231315343 is about 613.8583203607.

Adding to 231315343 its reverse (343513132), we get a palindrome (574828475).

The spelling of 231315343 in words is "two hundred thirty-one million, three hundred fifteen thousand, three hundred forty-three".