313121322 has 16 divisors (see below), whose sum is σ = 695825280. Its totient is φ = 104373756.

The previous prime is 313121321. The next prime is 313121327. The reversal of 313121322 is 223121313.

313121322 is a `hidden beast` number, since 31 + 312 + 1 + 322 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 313121295 and 313121304.

It is not an unprimeable number, because it can be changed into a prime (313121321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2899218 + ... + 2899325.

It is an arithmetic number, because the mean of its divisors is an integer number (43489080).

Almost surely, 2^313121322 is an apocalyptic number.

313121322 is an abundant number, since it is smaller than the sum of its proper divisors (382703958).

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

313121322 is a wasteful number, since it uses less digits than its factorization.

313121322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5798554 (or 5798548 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 313121322 is about 17695.2344432053. The cubic root of 313121322 is about 679.0538470502.

Adding to 313121322 its reverse (223121313), we get a palindrome (536242635).

Subtracting from 313121322 its reverse (223121313), we obtain a palindrome (90000009).

The spelling of 313121322 in words is "three hundred thirteen million, one hundred twenty-one thousand, three hundred twenty-two".