2311332120331 has 4 divisors (see below), whose sum is σ = 2489126898832. Its totient is φ = 2133537341832.

The previous prime is 2311332120301. The next prime is 2311332120343. The reversal of 2311332120331 is 1330212331132.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2311332120331 - 2⁹ = 2311332119819 is a prime.

It is a super-2 number, since 2×2311332120331² (a number of 26 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 = 2311332120296 and 2311332120305.

It is not an unprimeable number, because it can be changed into a prime (2311332120301) 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, 88897389231 + ... + 88897389256.

It is an arithmetic number, because the mean of its divisors is an integer number (622281724708).

Almost surely, 2^{2311332120331} is an apocalyptic number.

2311332120331 is a deficient number, since it is larger than the sum of its proper divisors (177794778501).

2311332120331 is a wasteful number, since it uses less digits than its factorization.

2311332120331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177794778500.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 2311332120331 its reverse (1330212331132), we get a palindrome (3641544451463).

The spelling of 2311332120331 in words is "two trillion, three hundred eleven billion, three hundred thirty-two million, one hundred twenty thousand, three hundred thirty-one".