313393649 has 4 divisors (see below), whose sum is σ = 313474560. Its totient is φ = 313312740.

The previous prime is 313393573. The next prime is 313393667. The reversal of 313393649 is 946393313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 313393649 - 2⁸ = 313393393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313393669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34337 + ... + 42494.

It is an arithmetic number, because the mean of its divisors is an integer number (78368640).

Almost surely, 2^313393649 is an apocalyptic number.

It is an amenable number.

313393649 is a deficient number, since it is larger than the sum of its proper divisors (80911).

313393649 is an equidigital number, since it uses as much as digits as its factorization.

313393649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80910.

The product of its digits is 157464, while the sum is 41.

The square root of 313393649 is about 17702.9276957231. The cubic root of 313393649 is about 679.2506516103.

The spelling of 313393649 in words is "three hundred thirteen million, three hundred ninety-three thousand, six hundred forty-nine".