231331304343 has 16 divisors (see below), whose sum is σ = 310514155776. Its totient is φ = 153184857600.

The previous prime is 231331304327. The next prime is 231331304357. The reversal of 231331304343 is 343403133132.

It is not a de Polignac number, because 231331304343 - 2⁴ = 231331304327 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231331304343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231331304363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6815671 + ... + 6849527.

It is an arithmetic number, because the mean of its divisors is an integer number (19407134736).

Almost surely, 2^231331304343 is an apocalyptic number.

231331304343 is a deficient number, since it is larger than the sum of its proper divisors (79182851433).

231331304343 is a wasteful number, since it uses less digits than its factorization.

231331304343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49094.

The product of its (nonzero) digits is 23328, while the sum is 30.

Adding to 231331304343 its reverse (343403133132), we get a palindrome (574734437475).

The spelling of 231331304343 in words is "two hundred thirty-one billion, three hundred thirty-one million, three hundred four thousand, three hundred forty-three".