313045665 has 8 divisors (see below), whose sum is σ = 500873088. Its totient is φ = 166957680.

The previous prime is 313045661. The next prime is 313045673. The reversal of 313045665 is 566540313.

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

It is not a de Polignac number, because 313045665 - 2² = 313045661 is a prime.

It is a super-3 number, since 3×313045665³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (313045661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10434841 + ... + 10434870.

It is an arithmetic number, because the mean of its divisors is an integer number (62609136).

Almost surely, 2^313045665 is an apocalyptic number.

It is an amenable number.

313045665 is a deficient number, since it is larger than the sum of its proper divisors (187827423).

313045665 is a wasteful number, since it uses less digits than its factorization.

313045665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20869719.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 313045665 is about 17693.0965350896. The cubic root of 313045665 is about 678.9991511952. Note that the first 3 decimals are identical.

Adding to 313045665 its reverse (566540313), we get a palindrome (879585978).

The spelling of 313045665 in words is "three hundred thirteen million, forty-five thousand, six hundred sixty-five".