313305421 has 32 divisors (see below), whose sum is σ = 391063680. Its totient is φ = 248814720.

The previous prime is 313305413. The next prime is 313305449. The reversal of 313305421 is 124503313.

It is not a de Polignac number, because 313305421 - 2³ = 313305413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313305392 and 313305401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313305481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 328281 + ... + 329233.

It is an arithmetic number, because the mean of its divisors is an integer number (12220740).

Almost surely, 2^313305421 is an apocalyptic number.

It is an amenable number.

313305421 is a deficient number, since it is larger than the sum of its proper divisors (77758259).

313305421 is a wasteful number, since it uses less digits than its factorization.

313305421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018 (or 996 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 313305421 is about 17700.4356161084. The cubic root of 313305421 is about 679.1869037207.

Adding to 313305421 its reverse (124503313), we get a palindrome (437808734).

The spelling of 313305421 in words is "three hundred thirteen million, three hundred five thousand, four hundred twenty-one".