310130813 has 6 divisors (see below), whose sum is σ = 329447226. Its totient is φ = 291887552.

The previous prime is 310130801. The next prime is 310130839. The reversal of 310130813 is 318031013.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 26646244 + 283484569 = 5162^2 + 16837^2 .

It is not a de Polignac number, because 310130813 - 2²⁶ = 243021949 is a prime.

It is a super-3 number, since 3×310130813³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (310130113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 536270 + ... + 536847.

It is an arithmetic number, because the mean of its divisors is an integer number (54907871).

Almost surely, 2^310130813 is an apocalyptic number.

It is an amenable number.

310130813 is a deficient number, since it is larger than the sum of its proper divisors (19316413).

310130813 is a wasteful number, since it uses less digits than its factorization.

310130813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073151 (or 1073134 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 310130813 is about 17610.5313094182. The cubic root of 310130813 is about 676.8851285151.

Adding to 310130813 its reverse (318031013), we get a palindrome (628161826).

The spelling of 310130813 in words is "three hundred ten million, one hundred thirty thousand, eight hundred thirteen".