313500222 has 48 divisors (see below), whose sum is σ = 780249600. Its totient is φ = 89114256.

The previous prime is 313500221. The next prime is 313500301. The reversal of 313500222 is 222005313.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 313500195 and 313500204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313500221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18823 + ... + 31325.

It is an arithmetic number, because the mean of its divisors is an integer number (16255200).

Almost surely, 2^313500222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 313500222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (390124800).

313500222 is an abundant number, since it is smaller than the sum of its proper divisors (466749378).

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

313500222 is a wasteful number, since it uses less digits than its factorization.

313500222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12717 (or 12714 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 313500222 is about 17705.9374787104. The cubic root of 313500222 is about 679.3276384668.

Adding to 313500222 its reverse (222005313), we get a palindrome (535505535).

The spelling of 313500222 in words is "three hundred thirteen million, five hundred thousand, two hundred twenty-two".