313121002203 has 6 divisors (see below), whose sum is σ = 452285892084. Its totient is φ = 208747334796.

The previous prime is 313121002199. The next prime is 313121002213. The reversal of 313121002203 is 302200121313.

313121002203 is a `hidden beast` number, since 31 + 312 + 100 + 220 + 3 = 666.

It is not a de Polignac number, because 313121002203 - 2² = 313121002199 is a prime.

It is a super-2 number, since 2×313121002203² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (313121002213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17395611225 + ... + 17395611242.

It is an arithmetic number, because the mean of its divisors is an integer number (75380982014).

Almost surely, 2^313121002203 is an apocalyptic number.

313121002203 is a deficient number, since it is larger than the sum of its proper divisors (139164889881).

313121002203 is a wasteful number, since it uses less digits than its factorization.

313121002203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34791222473 (or 34791222470 counting only the distinct ones).

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

Adding to 313121002203 its reverse (302200121313), we get a palindrome (615321123516).

The spelling of 313121002203 in words is "three hundred thirteen billion, one hundred twenty-one million, two thousand, two hundred three".