313211320 has 16 divisors (see below), whose sum is σ = 704725560. Its totient is φ = 125284512.

The previous prime is 313211303. The next prime is 313211323. The reversal of 313211320 is 23112313.

It is a super-2 number, since 2×313211320² = 196202661952284800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 313211294 and 313211303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313211323) 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, 3915102 + ... + 3915181.

Almost surely, 2^313211320 is an apocalyptic number.

It is an amenable number.

313211320 is an abundant number, since it is smaller than the sum of its proper divisors (391514240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

313211320 is a wasteful number, since it uses less digits than its factorization.

313211320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7830294 (or 7830290 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 313211320 is about 17697.7772615659. Note that the first 3 decimals coincide. The cubic root of 313211320 is about 679.1188991877.

Adding to 313211320 its reverse (23112313), we get a palindrome (336323633).

The spelling of 313211320 in words is "three hundred thirteen million, two hundred eleven thousand, three hundred twenty".