231989994323 has 4 divisors (see below), whose sum is σ = 232125742080. Its totient is φ = 231854246568.

The previous prime is 231989994311. The next prime is 231989994331. The reversal of 231989994323 is 323499989132.

It is a happy number.

231989994323 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.

It is a cyclic number.

It is not a de Polignac number, because 231989994323 - 2¹² = 231989990227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231989996323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67871315 + ... + 67874732.

It is an arithmetic number, because the mean of its divisors is an integer number (58031435520).

Almost surely, 2^231989994323 is an apocalyptic number.

231989994323 is a deficient number, since it is larger than the sum of its proper divisors (135747757).

231989994323 is a wasteful number, since it uses less digits than its factorization.

231989994323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135747756.

The product of its digits is 22674816, while the sum is 62.

The spelling of 231989994323 in words is "two hundred thirty-one billion, nine hundred eighty-nine million, nine hundred ninety-four thousand, three hundred twenty-three".