12311310331 has 4 divisors (see below), whose sum is σ = 12573253152. Its totient is φ = 12049367512.

The previous prime is 12311310311. The next prime is 12311310353. The reversal of 12311310331 is 13301311321.

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 12311310331 - 2¹⁷ = 12311179259 is a prime.

It is a super-2 number, since 2×12311310331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12311310299 and 12311310308.

It is not an unprimeable number, because it can be changed into a prime (12311310311) 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, 130971340 + ... + 130971433.

It is an arithmetic number, because the mean of its divisors is an integer number (3143313288).

Almost surely, 2^12311310331 is an apocalyptic number.

12311310331 is a deficient number, since it is larger than the sum of its proper divisors (261942821).

12311310331 is an equidigital number, since it uses as much as digits as its factorization.

12311310331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261942820.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 12311310331 its reverse (13301311321), we get a palindrome (25612621652).

The spelling of 12311310331 in words is "twelve billion, three hundred eleven million, three hundred ten thousand, three hundred thirty-one".