313220244 has 96 divisors (see below), whose sum is σ = 799787520. Its totient is φ = 95064192.

The previous prime is 313220239. The next prime is 313220261. The reversal of 313220244 is 442022313.

It is a self number, because there is not a number n which added to its sum of digits gives 313220244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 902479 + ... + 902825.

It is an arithmetic number, because the mean of its divisors is an integer number (8331120).

Almost surely, 2^313220244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 313220244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399893760).

313220244 is an abundant number, since it is smaller than the sum of its proper divisors (486567276).

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

313220244 is a wasteful number, since it uses less digits than its factorization.

313220244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 313220244 is about 17698.0293818267. The cubic root of 313220244 is about 679.1253489328.

Adding to 313220244 its reverse (442022313), we get a palindrome (755242557).

The spelling of 313220244 in words is "three hundred thirteen million, two hundred twenty thousand, two hundred forty-four".