313440665 has 8 divisors (see below), whose sum is σ = 392482368. Its totient is φ = 239850160.

The previous prime is 313440641. The next prime is 313440709. The reversal of 313440665 is 566044313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 313440665 - 2⁶ = 313440601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1362671 + ... + 1362900.

It is an arithmetic number, because the mean of its divisors is an integer number (49060296).

Almost surely, 2^313440665 is an apocalyptic number.

It is an amenable number.

313440665 is a deficient number, since it is larger than the sum of its proper divisors (79041703).

313440665 is a wasteful number, since it uses less digits than its factorization.

313440665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2725599.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 313440665 is about 17704.2555618699. The cubic root of 313440665 is about 679.2846174675.

Adding to 313440665 its reverse (566044313), we get a palindrome (879484978).

The spelling of 313440665 in words is "three hundred thirteen million, four hundred forty thousand, six hundred sixty-five".