313013222 has 4 divisors (see below), whose sum is σ = 469519836. Its totient is φ = 156506610.

The previous prime is 313013221. The next prime is 313013237. The reversal of 313013222 is 222310313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222310313 = 421 ⋅528053.

It is a self number, because there is not a number n which added to its sum of digits gives 313013222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313013221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78253304 + ... + 78253307.

It is an arithmetic number, because the mean of its divisors is an integer number (117379959).

Almost surely, 2^313013222 is an apocalyptic number.

313013222 is a deficient number, since it is larger than the sum of its proper divisors (156506614).

313013222 is a wasteful number, since it uses less digits than its factorization.

313013222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156506613.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 313013222 is about 17692.1796848212. The cubic root of 313013222 is about 678.9756939886.

Adding to 313013222 its reverse (222310313), we get a palindrome (535323535).

The spelling of 313013222 in words is "three hundred thirteen million, thirteen thousand, two hundred twenty-two".