231331203023 has 4 divisors (see below), whose sum is σ = 231593781888. Its totient is φ = 231068624160.

The previous prime is 231331202969. The next prime is 231331203031. The reversal of 231331203023 is 320302133132.

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 231331203023 - 2¹⁶ = 231331137487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231331203023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231331205023) 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, 131288111 + ... + 131289872.

It is an arithmetic number, because the mean of its divisors is an integer number (57898445472).

Almost surely, 2^231331203023 is an apocalyptic number.

231331203023 is a deficient number, since it is larger than the sum of its proper divisors (262578865).

231331203023 is an equidigital number, since it uses as much as digits as its factorization.

231331203023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262578864.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 231331203023 its reverse (320302133132), we get a palindrome (551633336155).

The spelling of 231331203023 in words is "two hundred thirty-one billion, three hundred thirty-one million, two hundred three thousand, twenty-three".