311320030131331 has 4 divisors (see below), whose sum is σ = 335267724756832. Its totient is φ = 287372335505832.

The previous prime is 311320030131329. The next prime is 311320030131337. The reversal of 311320030131331 is 133131030023113.

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 311320030131331 - 2¹ = 311320030131329 is a prime.

It is a super-2 number, since 2×311320030131331² (a number of 30 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 = 311320030131296 and 311320030131305.

It is not an unprimeable number, because it can be changed into a prime (311320030131337) 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, 11973847312731 + ... + 11973847312756.

It is an arithmetic number, because the mean of its divisors is an integer number (83816931189208).

Almost surely, 2^{311320030131331} is an apocalyptic number.

311320030131331 is a deficient number, since it is larger than the sum of its proper divisors (23947694625501).

311320030131331 is a wasteful number, since it uses less digits than its factorization.

311320030131331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23947694625500.

The product of its (nonzero) digits is 1458, while the sum is 25.

Adding to 311320030131331 its reverse (133131030023113), we get a palindrome (444451060154444).

The spelling of 311320030131331 in words is "three hundred eleven trillion, three hundred twenty billion, thirty million, one hundred thirty-one thousand, three hundred thirty-one".