2112312331 has 4 divisors (see below), whose sum is σ = 2146940464. Its totient is φ = 2077684200.

The previous prime is 2112312281. The next prime is 2112312421. The reversal of 2112312331 is 1332132112.

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 2112312331 - 2⁹ = 2112311819 is a prime.

It is a super-2 number, since 2×2112312331² = 8923726767389307122, 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 = 2112312299 and 2112312308.

It is not an unprimeable number, because it can be changed into a prime (2112312031) 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, 17313975 + ... + 17314096.

It is an arithmetic number, because the mean of its divisors is an integer number (536735116).

Almost surely, 2^2112312331 is an apocalyptic number.

2112312331 is a deficient number, since it is larger than the sum of its proper divisors (34628133).

2112312331 is an equidigital number, since it uses as much as digits as its factorization.

2112312331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34628132.

The product of its digits is 216, while the sum is 19.

The square root of 2112312331 is about 45959.8991622044. The cubic root of 2112312331 is about 1283.0769746135.

Adding to 2112312331 its reverse (1332132112), we get a palindrome (3444444443).

The spelling of 2112312331 in words is "two billion, one hundred twelve million, three hundred twelve thousand, three hundred thirty-one".