331023221323213 has 4 divisors (see below), whose sum is σ = 331310817520128. Its totient is φ = 330735625126300.

The previous prime is 331023221323127. The next prime is 331023221323303. The reversal of 331023221323213 is 312323122320133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331023221323213 is a prime.

It is a super-2 number, since 2×331023221323213² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331023221323913) 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, 143798096731 + ... + 143798099032.

It is an arithmetic number, because the mean of its divisors is an integer number (82827704380032).

Almost surely, 2^{331023221323213} is an apocalyptic number.

It is an amenable number.

331023221323213 is a deficient number, since it is larger than the sum of its proper divisors (287596196915).

331023221323213 is a wasteful number, since it uses less digits than its factorization.

331023221323213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287596196914.

The product of its (nonzero) digits is 23328, while the sum is 31.

Adding to 331023221323213 its reverse (312323122320133), we get a palindrome (643346343643346).

The spelling of 331023221323213 in words is "three hundred thirty-one trillion, twenty-three billion, two hundred twenty-one million, three hundred twenty-three thousand, two hundred thirteen".