313304421 has 4 divisors (see below), whose sum is σ = 417739232. Its totient is φ = 208869612.

The previous prime is 313304417. The next prime is 313304423. The reversal of 313304421 is 124403313.

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 not a de Polignac number, because 313304421 - 2² = 313304417 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 (313304423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52217401 + ... + 52217406.

It is an arithmetic number, because the mean of its divisors is an integer number (104434808).

Almost surely, 2^313304421 is an apocalyptic number.

It is an amenable number.

313304421 is a deficient number, since it is larger than the sum of its proper divisors (104434811).

313304421 is a wasteful number, since it uses less digits than its factorization.

313304421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104434810.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 313304421 is about 17700.4073681935. The cubic root of 313304421 is about 679.1861811163.

Adding to 313304421 its reverse (124403313), we get a palindrome (437707734).

The spelling of 313304421 in words is "three hundred thirteen million, three hundred four thousand, four hundred twenty-one".