313333220 has 12 divisors (see below), whose sum is σ = 657999804. Its totient is φ = 125333280.

The previous prime is 313333211. The next prime is 313333283. The reversal of 313333220 is 22333313.

It can be written as a sum of positive squares in 2 ways, for example, as 47251876 + 266081344 = 6874^2 + 16312^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 15666661 = 313333220 / (3 + 1 + 3 + 3 + 3 + 3 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 313333192 and 313333201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7833311 + ... + 7833350.

It is an arithmetic number, because the mean of its divisors is an integer number (54833317).

Almost surely, 2^313333220 is an apocalyptic number.

It is an amenable number.

313333220 is an abundant number, since it is smaller than the sum of its proper divisors (344666584).

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

313333220 is a wasteful number, since it uses less digits than its factorization.

313333220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15666670 (or 15666668 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 20.

The square root of 313333220 is about 17701.2208618502. The cubic root of 313333220 is about 679.2069907850.

Adding to 313333220 its reverse (22333313), we get a palindrome (335666533).

The spelling of 313333220 in words is "three hundred thirteen million, three hundred thirty-three thousand, two hundred twenty".