313141221 has 32 divisors (see below), whose sum is σ = 473658240. Its totient is φ = 206977680.

The previous prime is 313141219. The next prime is 313141229. The reversal of 313141221 is 122141313.

It is not a de Polignac number, because 313141221 - 2¹ = 313141219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 313141194 and 313141203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313141229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 285951 + ... + 287043.

It is an arithmetic number, because the mean of its divisors is an integer number (14801820).

Almost surely, 2^313141221 is an apocalyptic number.

It is an amenable number.

313141221 is a deficient number, since it is larger than the sum of its proper divisors (160517019).

313141221 is an equidigital number, since it uses as much as digits as its factorization.

313141221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245 (or 1227 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 313141221 is about 17695.7967043024. The cubic root of 313141221 is about 679.0682314706.

Adding to 313141221 its reverse (122141313), we get a palindrome (435282534).

The spelling of 313141221 in words is "three hundred thirteen million, one hundred forty-one thousand, two hundred twenty-one".