313233133231321 has 4 divisors (see below), whose sum is σ = 313242800654644. Its totient is φ = 313223465808000.

The previous prime is 313233133231301. The next prime is 313233133231331. The reversal of 313233133231321 is 123132331332313.

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

It can be written as a sum of positive squares in 2 ways, for example, as 167803136593225 + 145429996638096 = 12953885^2 + 12059436^2 .

It is a cyclic number.

It is not a de Polignac number, because 313233133231321 - 2¹⁵ = 313233133198553 is a prime.

It is a super-2 number, since 2×313233133231321² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313233133231301) 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, 4833663060 + ... + 4833727861.

It is an arithmetic number, because the mean of its divisors is an integer number (78310700163661).

Almost surely, 2^{313233133231321} is an apocalyptic number.

It is an amenable number.

313233133231321 is a deficient number, since it is larger than the sum of its proper divisors (9667423323).

313233133231321 is an equidigital number, since it uses as much as digits as its factorization.

313233133231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9667423322.

The product of its digits is 52488, while the sum is 34.

Adding to 313233133231321 its reverse (123132331332313), we get a palindrome (436365464563634).

The spelling of 313233133231321 in words is "three hundred thirteen trillion, two hundred thirty-three billion, one hundred thirty-three million, two hundred thirty-one thousand, three hundred twenty-one".