313221105 has 24 divisors (see below), whose sum is σ = 543858432. Its totient is φ = 166761504.

The previous prime is 313221089. The next prime is 313221119. The reversal of 313221105 is 501122313.

It is not a de Polignac number, because 313221105 - 2⁴ = 313221089 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21582 + ... + 33048.

It is an arithmetic number, because the mean of its divisors is an integer number (22660768).

Almost surely, 2^313221105 is an apocalyptic number.

It is an amenable number.

313221105 is a deficient number, since it is larger than the sum of its proper divisors (230637327).

313221105 is a wasteful number, since it uses less digits than its factorization.

313221105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12085 (or 12082 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 313221105 is about 17698.0537065520. The cubic root of 313221105 is about 679.1259712067.

Adding to 313221105 its reverse (501122313), we get a palindrome (814343418).

The spelling of 313221105 in words is "three hundred thirteen million, two hundred twenty-one thousand, one hundred five".