2331312231 has 8 divisors (see below), whose sum is σ = 3116247664. Its totient is φ = 1550292480.

The previous prime is 2331312211. The next prime is 2331312241. The reversal of 2331312231 is 1322131332.

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

It is not a de Polignac number, because 2331312231 - 2⁶ = 2331312167 is a prime.

It is a super-2 number, since 2×2331312231² = 10870033436820394722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2331312198 and 2331312207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331312211) 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, 977530 + ... + 979911.

It is an arithmetic number, because the mean of its divisors is an integer number (389530958).

Almost surely, 2^2331312231 is an apocalyptic number.

2331312231 is a deficient number, since it is larger than the sum of its proper divisors (784935433).

2331312231 is a wasteful number, since it uses less digits than its factorization.

2331312231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957841.

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

The square root of 2331312231 is about 48283.6642250772. The cubic root of 2331312231 is about 1325.9693357318.

Adding to 2331312231 its reverse (1322131332), we get a palindrome (3653443563).

The spelling of 2331312231 in words is "two billion, three hundred thirty-one million, three hundred twelve thousand, two hundred thirty-one".