231110840431 has 16 divisors (see below), whose sum is σ = 241631953920. Its totient is φ = 220785629760.

The previous prime is 231110840399. The next prime is 231110840437. The reversal of 231110840431 is 134048011132.

It is a cyclic number.

It is not a de Polignac number, because 231110840431 - 2⁵ = 231110840399 is a prime.

It is a super-2 number, since 2×231110840431² (a number of 24 digits) contains 22 as substring.

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 231110840431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231110840437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3266155 + ... + 3336163.

It is an arithmetic number, because the mean of its divisors is an integer number (15101997120).

Almost surely, 2^231110840431 is an apocalyptic number.

231110840431 is a deficient number, since it is larger than the sum of its proper divisors (10521113489).

231110840431 is a wasteful number, since it uses less digits than its factorization.

231110840431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71406.

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 231110840431 its reverse (134048011132), we get a palindrome (365158851563).

The spelling of 231110840431 in words is "two hundred thirty-one billion, one hundred ten million, eight hundred forty thousand, four hundred thirty-one".