313031111312131 has 4 divisors (see below), whose sum is σ = 313031586679000. Its totient is φ = 313030635945264.

The previous prime is 313031111312119. The next prime is 313031111312141. The reversal of 313031111312131 is 131213111130313.

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 313031111312131 - 2⁹ = 313031111311619 is a prime.

It is a super-2 number, since 2×313031111312131² (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 = 313031111312096 and 313031111312105.

It is not an unprimeable number, because it can be changed into a prime (313031111312141) 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, 236694306 + ... + 238013143.

It is an arithmetic number, because the mean of its divisors is an integer number (78257896669750).

Almost surely, 2^{313031111312131} is an apocalyptic number.

313031111312131 is a deficient number, since it is larger than the sum of its proper divisors (475366869).

313031111312131 is an equidigital number, since it uses as much as digits as its factorization.

313031111312131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475366868.

The product of its (nonzero) digits is 486, while the sum is 25.

Adding to 313031111312131 its reverse (131213111130313), we get a palindrome (444244222442444).

The spelling of 313031111312131 in words is "three hundred thirteen trillion, thirty-one billion, one hundred eleven million, three hundred twelve thousand, one hundred thirty-one".