231000023231 has 4 divisors (see below), whose sum is σ = 233595529200. Its totient is φ = 228404517264.

The previous prime is 231000023207. The next prime is 231000023239. The reversal of 231000023231 is 132320000132.

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 231000023231 - 2¹⁴ = 231000006847 is a prime.

It is a super-2 number, since 2×231000023231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231000023239) 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, 1297752851 + ... + 1297753028.

It is an arithmetic number, because the mean of its divisors is an integer number (58398882300).

Almost surely, 2^231000023231 is an apocalyptic number.

231000023231 is a deficient number, since it is larger than the sum of its proper divisors (2595505969).

231000023231 is an equidigital number, since it uses as much as digits as its factorization.

231000023231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595505968.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 231000023231 its reverse (132320000132), we get a palindrome (363320023363).

The spelling of 231000023231 in words is "two hundred thirty-one billion, twenty-three thousand, two hundred thirty-one".