313304381 has 4 divisors (see below), whose sum is σ = 337404732. Its totient is φ = 289204032.

The previous prime is 313304377. The next prime is 313304389. The reversal of 313304381 is 183403313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 183403313 = 263 ⋅697351.

It can be written as a sum of positive squares in 2 ways, for example, as 32205625 + 281098756 = 5675^2 + 16766^2 .

It is not a de Polignac number, because 313304381 - 2² = 313304377 is a prime.

It is a super-2 number, since 2×313304381² = 196319270307586322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 313304381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313304389) 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, 12050156 + ... + 12050181.

It is an arithmetic number, because the mean of its divisors is an integer number (84351183).

Almost surely, 2^313304381 is an apocalyptic number.

It is an amenable number.

313304381 is a deficient number, since it is larger than the sum of its proper divisors (24100351).

313304381 is a wasteful number, since it uses less digits than its factorization.

313304381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24100350.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 313304381 is about 17700.4062382760. The cubic root of 313304381 is about 679.1861522121.

Adding to 313304381 its reverse (183403313), we get a palindrome (496707694).

The spelling of 313304381 in words is "three hundred thirteen million, three hundred four thousand, three hundred eighty-one".