231320204343 has 24 divisors (see below), whose sum is σ = 351794551680. Its totient is φ = 146063898000.

The previous prime is 231320204309. The next prime is 231320204351. The reversal of 231320204343 is 343402023132.

231320204343 is a `hidden beast` number, since 2 + 313 + 2 + 0 + 2 + 0 + 4 + 343 = 666.

It is not a de Polignac number, because 231320204343 - 2²⁴ = 231303427127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231320204303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 615718 + ... + 917468.

It is an arithmetic number, because the mean of its divisors is an integer number (14658106320).

Almost surely, 2^231320204343 is an apocalyptic number.

231320204343 is a deficient number, since it is larger than the sum of its proper divisors (120474347337).

231320204343 is a wasteful number, since it uses less digits than its factorization.

231320204343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306259 (or 306256 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 231320204343 its reverse (343402023132), we get a palindrome (574722227475).

The spelling of 231320204343 in words is "two hundred thirty-one billion, three hundred twenty million, two hundred four thousand, three hundred forty-three".