331331022331 has 4 divisors (see below), whose sum is σ = 333525267664. Its totient is φ = 329136777000.

The previous prime is 331331022317. The next prime is 331331022349. The reversal of 331331022331 is 133220133133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133220133133 = 43 ⋅3098142631.

It is a cyclic number.

It is not a de Polignac number, because 331331022331 - 2⁷ = 331331022203 is a prime.

It is a super-2 number, since 2×331331022331² (a number of 24 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 = 331331022296 and 331331022305.

It is not an unprimeable number, because it can be changed into a prime (331331022931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1097122440 + ... + 1097122741.

It is an arithmetic number, because the mean of its divisors is an integer number (83381316916).

Almost surely, 2^331331022331 is an apocalyptic number.

331331022331 is a deficient number, since it is larger than the sum of its proper divisors (2194245333).

331331022331 is a wasteful number, since it uses less digits than its factorization.

331331022331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194245332.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 331331022331 its reverse (133220133133), we get a palindrome (464551155464).

The spelling of 331331022331 in words is "three hundred thirty-one billion, three hundred thirty-one million, twenty-two thousand, three hundred thirty-one".