231891868283 has 4 divisors (see below), whose sum is σ = 233173039008. Its totient is φ = 230610697560.

The previous prime is 231891868253. The next prime is 231891868331. The reversal of 231891868283 is 382868198132.

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 231891868283 - 2¹⁸ = 231891606139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231891868253) 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, 640585091 + ... + 640585452.

It is an arithmetic number, because the mean of its divisors is an integer number (58293259752).

Almost surely, 2^231891868283 is an apocalyptic number.

231891868283 is a deficient number, since it is larger than the sum of its proper divisors (1281170725).

231891868283 is a wasteful number, since it uses less digits than its factorization.

231891868283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281170724.

The product of its digits is 7962624, while the sum is 59.

The spelling of 231891868283 in words is "two hundred thirty-one billion, eight hundred ninety-one million, eight hundred sixty-eight thousand, two hundred eighty-three".