313121122203 has 16 divisors (see below), whose sum is σ = 422549366400. Its totient is φ = 206220438144.

The previous prime is 313121122201. The next prime is 313121122217. The reversal of 313121122203 is 302221121313.

It is not a de Polignac number, because 313121122203 - 2¹ = 313121122201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 313121122203.

It is not an unprimeable number, because it can be changed into a prime (313121122201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6974275 + ... + 7019027.

It is an arithmetic number, because the mean of its divisors is an integer number (26409335400).

Almost surely, 2^313121122203 is an apocalyptic number.

313121122203 is a deficient number, since it is larger than the sum of its proper divisors (109428244197).

313121122203 is a wasteful number, since it uses less digits than its factorization.

313121122203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72938.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 313121122203 its reverse (302221121313), we get a palindrome (615342243516).

The spelling of 313121122203 in words is "three hundred thirteen billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred three".