313212311331 has 4 divisors (see below), whose sum is σ = 417616415112. Its totient is φ = 208808207552.

The previous prime is 313212311323. The next prime is 313212311333. The reversal of 313212311331 is 133113212313.

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

It is a cyclic number.

It is not a de Polignac number, because 313212311331 - 2³ = 313212311323 is a prime.

It is a super-2 number, since 2×313212311331² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (313212311333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52202051886 + ... + 52202051891.

It is an arithmetic number, because the mean of its divisors is an integer number (104404103778).

Almost surely, 2^313212311331 is an apocalyptic number.

313212311331 is a deficient number, since it is larger than the sum of its proper divisors (104404103781).

313212311331 is a wasteful number, since it uses less digits than its factorization.

313212311331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104404103780.

The product of its digits is 972, while the sum is 24.

Adding to 313212311331 its reverse (133113212313), we get a palindrome (446325523644).

The spelling of 313212311331 in words is "three hundred thirteen billion, two hundred twelve million, three hundred eleven thousand, three hundred thirty-one".