313311333131 has 4 divisors (see below), whose sum is σ = 313331457264. Its totient is φ = 313291209000.

The previous prime is 313311333061. The next prime is 313311333133. The reversal of 313311333131 is 131333113313.

It is a happy number.

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 313311333131 - 2³⁰ = 312237591307 is a prime.

It is a super-2 number, since 2×313311333131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 313311333131.

It is not an unprimeable number, because it can be changed into a prime (313311333133) 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, 10038695 + ... + 10069856.

It is an arithmetic number, because the mean of its divisors is an integer number (78332864316).

Almost surely, 2^313311333131 is an apocalyptic number.

313311333131 is a deficient number, since it is larger than the sum of its proper divisors (20124133).

313311333131 is a wasteful number, since it uses less digits than its factorization.

313311333131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20124132.

The product of its digits is 2187, while the sum is 26.

Adding to 313311333131 its reverse (131333113313), we get a palindrome (444644446444).

The spelling of 313311333131 in words is "three hundred thirteen billion, three hundred eleven million, three hundred thirty-three thousand, one hundred thirty-one".