313347021 has 16 divisors (see below), whose sum is σ = 451878336. Its totient is φ = 191995776.

The previous prime is 313347011. The next prime is 313347029. The reversal of 313347021 is 120743313.

It is not a de Polignac number, because 313347021 - 2⁷ = 313346893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 313346982 and 313347000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313347029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8155 + ... + 26328.

It is an arithmetic number, because the mean of its divisors is an integer number (28242396).

Almost surely, 2^313347021 is an apocalyptic number.

It is an amenable number.

313347021 is a deficient number, since it is larger than the sum of its proper divisors (138531315).

313347021 is a wasteful number, since it uses less digits than its factorization.

313347021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34732.

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 313347021 is about 17701.6106894260. The cubic root of 313347021 is about 679.2169627014.

The spelling of 313347021 in words is "three hundred thirteen million, three hundred forty-seven thousand, twenty-one".