313440345 has 12 divisors (see below), whose sum is σ = 543296676. Its totient is φ = 167168160.

The previous prime is 313440341. The next prime is 313440353. The reversal of 313440345 is 543044313.

313440345 is a `hidden beast` number, since 313 + 4 + 4 + 0 + 345 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 69705801 + 243734544 = 8349^2 + 15612^2 .

It is not a de Polignac number, because 313440345 - 2² = 313440341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (313440341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3482626 + ... + 3482715.

It is an arithmetic number, because the mean of its divisors is an integer number (45274723).

Almost surely, 2^313440345 is an apocalyptic number.

It is an amenable number.

313440345 is a deficient number, since it is larger than the sum of its proper divisors (229856331).

313440345 is a wasteful number, since it uses less digits than its factorization.

313440345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6965352 (or 6965349 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 313440345 is about 17704.2465244924. The cubic root of 313440345 is about 679.2843863008.

Adding to 313440345 its reverse (543044313), we get a palindrome (856484658).

The spelling of 313440345 in words is "three hundred thirteen million, four hundred forty thousand, three hundred forty-five".