231120102231 has 12 divisors (see below), whose sum is σ = 348354937008. Its totient is φ = 147380934624.

The previous prime is 231120102223. The next prime is 231120102307. The reversal of 231120102231 is 132201021132.

231120102231 is a `hidden beast` number, since 2 + 311 + 20 + 102 + 231 = 666.

It is not a de Polignac number, because 231120102231 - 2³ = 231120102223 is a prime.

It is a super-2 number, since 2×231120102231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231120102931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 558260910 + ... + 558261323.

It is an arithmetic number, because the mean of its divisors is an integer number (29029578084).

Almost surely, 2^231120102231 is an apocalyptic number.

231120102231 is a deficient number, since it is larger than the sum of its proper divisors (117234834777).

231120102231 is a wasteful number, since it uses less digits than its factorization.

231120102231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116522262 (or 1116522259 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 231120102231 its reverse (132201021132), we get a palindrome (363321123363).

The spelling of 231120102231 in words is "two hundred thirty-one billion, one hundred twenty million, one hundred two thousand, two hundred thirty-one".