313793821 has 8 divisors (see below), whose sum is σ = 347933088. Its totient is φ = 280590000.

The previous prime is 313793813. The next prime is 313793849. The reversal of 313793821 is 128397313.

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

It is a cyclic number.

It is not a de Polignac number, because 313793821 - 2³ = 313793813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313793861) 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, 233155 + ... + 234496.

It is an arithmetic number, because the mean of its divisors is an integer number (43491636).

Almost surely, 2^313793821 is an apocalyptic number.

It is an amenable number.

313793821 is a deficient number, since it is larger than the sum of its proper divisors (34139267).

313793821 is a wasteful number, since it uses less digits than its factorization.

313793821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467723.

The product of its digits is 27216, while the sum is 37.

The square root of 313793821 is about 17714.2265143020. The cubic root of 313793821 is about 679.5396401080.

The spelling of 313793821 in words is "three hundred thirteen million, seven hundred ninety-three thousand, eight hundred twenty-one".