313213211 has 4 divisors (see below), whose sum is σ = 313258800. Its totient is φ = 313167624.

The previous prime is 313213207. The next prime is 313213231. The reversal of 313213211 is 112312313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 313213211 - 2² = 313213207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 313213211.

It is not an unprimeable number, because it can be changed into a prime (313213231) 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, 10151 + ... + 27008.

It is an arithmetic number, because the mean of its divisors is an integer number (78314700).

Almost surely, 2^313213211 is an apocalyptic number.

313213211 is a deficient number, since it is larger than the sum of its proper divisors (45589).

313213211 is an equidigital number, since it uses as much as digits as its factorization.

313213211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45588.

The product of its digits is 108, while the sum is 17.

The square root of 313213211 is about 17697.8306862734. The cubic root of 313213211 is about 679.1202659021.

Adding to 313213211 its reverse (112312313), we get a palindrome (425525524).

The spelling of 313213211 in words is "three hundred thirteen million, two hundred thirteen thousand, two hundred eleven".