313123030313 has 4 divisors (see below), whose sum is σ = 313124794068. Its totient is φ = 313121266560.

The previous prime is 313123030309. The next prime is 313123030357. The reversal of 313123030313 is 313030321313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313030321313 = 120551 ⋅2596663.

It can be written as a sum of positive squares in 2 ways, for example, as 209024524864 + 104098505449 = 457192^2 + 322643^2 .

It is a cyclic number.

It is not a de Polignac number, because 313123030313 - 2² = 313123030309 is a prime.

It is a super-2 number, since 2×313123030313² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313123030513) 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, 581468 + ... + 982013.

It is an arithmetic number, because the mean of its divisors is an integer number (78281198517).

Almost surely, 2^313123030313 is an apocalyptic number.

It is an amenable number.

313123030313 is a deficient number, since it is larger than the sum of its proper divisors (1763755).

313123030313 is a wasteful number, since it uses less digits than its factorization.

313123030313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763754.

The product of its (nonzero) digits is 1458, while the sum is 23.

Adding to 313123030313 its reverse (313030321313), we get a palindrome (626153351626).

The spelling of 313123030313 in words is "three hundred thirteen billion, one hundred twenty-three million, thirty thousand, three hundred thirteen".