313120033121 has 4 divisors (see below), whose sum is σ = 357851466432. Its totient is φ = 268388599812.

The previous prime is 313120033111. The next prime is 313120033129. The reversal of 313120033121 is 121330021313.

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, and also an emirpimes, since its reverse is a distinct semiprime: 121330021313 = 340393 ⋅356441.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313120033121 is a prime.

It is a super-2 number, since 2×313120033121² (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 = 313120033093 and 313120033102.

It is not an unprimeable number, because it can be changed into a prime (313120033129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22365716645 + ... + 22365716658.

It is an arithmetic number, because the mean of its divisors is an integer number (89462866608).

Almost surely, 2^313120033121 is an apocalyptic number.

It is an amenable number.

313120033121 is a deficient number, since it is larger than the sum of its proper divisors (44731433311).

313120033121 is an equidigital number, since it uses as much as digits as its factorization.

313120033121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44731433310.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 313120033121 its reverse (121330021313), we get a palindrome (434450054434).

The spelling of 313120033121 in words is "three hundred thirteen billion, one hundred twenty million, thirty-three thousand, one hundred twenty-one".