2312331231 has 8 divisors (see below), whose sum is σ = 3523552384. Its totient is φ = 1321332120.

The previous prime is 2312331227. The next prime is 2312331247. The reversal of 2312331231 is 1321332132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2312331231 - 2² = 2312331227 is a prime.

It is a super-2 number, since 2×2312331231² = 10693751443715950722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 110111011 = 2312331231 / (2 + 3 + 1 + 2 + 3 + 3 + 1 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2312331198 and 2312331207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312341231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55055485 + ... + 55055526.

It is an arithmetic number, because the mean of its divisors is an integer number (440444048).

Almost surely, 2^2312331231 is an apocalyptic number.

2312331231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2312331231 is a deficient number, since it is larger than the sum of its proper divisors (1211221153).

2312331231 is a wasteful number, since it uses less digits than its factorization.

2312331231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110111021.

The product of its digits is 648, while the sum is 21.

The square root of 2312331231 is about 48086.7053456566. The cubic root of 2312331231 is about 1322.3609474501.

2312331231 divided by its sum of digits (21) gives a palindrome (110111011).

Adding to 2312331231 its reverse (1321332132), we get a palindrome (3633663363).

Subtracting from 2312331231 its reverse (1321332132), we obtain a palindrome (990999099).

The spelling of 2312331231 in words is "two billion, three hundred twelve million, three hundred thirty-one thousand, two hundred thirty-one".