313121130031 has 4 divisors (see below), whose sum is σ = 317531286864. Its totient is φ = 308710973200.

The previous prime is 313121130011. The next prime is 313121130079. The reversal of 313121130031 is 130031121313.

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 313121130031 - 2⁵ = 313121129999 is a prime.

It is a super-2 number, since 2×313121130031² (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 = 313121129990 and 313121130008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313121130011) 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, 2205078310 + ... + 2205078451.

It is an arithmetic number, because the mean of its divisors is an integer number (79382821716).

Almost surely, 2^313121130031 is an apocalyptic number.

313121130031 is a deficient number, since it is larger than the sum of its proper divisors (4410156833).

313121130031 is an equidigital number, since it uses as much as digits as its factorization.

313121130031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4410156832.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 313121130031 its reverse (130031121313), we get a palindrome (443152251344).

The spelling of 313121130031 in words is "three hundred thirteen billion, one hundred twenty-one million, one hundred thirty thousand, thirty-one".