313312100203 has 4 divisors (see below), whose sum is σ = 329802210760. Its totient is φ = 296821989648.

The previous prime is 313312100149. The next prime is 313312100207. The reversal of 313312100203 is 302001213313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 313312100203 - 2¹³ = 313312092011 is a prime.

It is a super-2 number, since 2×313312100203² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 16490110537 = 313312100203 / (3 + 1 + 3 + 3 + 1 + 2 + 1 + 0 + 0 + 2 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313312100207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8245055250 + ... + 8245055287.

It is an arithmetic number, because the mean of its divisors is an integer number (82450552690).

Almost surely, 2^313312100203 is an apocalyptic number.

313312100203 is a deficient number, since it is larger than the sum of its proper divisors (16490110557).

313312100203 is a wasteful number, since it uses less digits than its factorization.

313312100203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16490110556.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 313312100203 its reverse (302001213313), we get a palindrome (615313313516).

The spelling of 313312100203 in words is "three hundred thirteen billion, three hundred twelve million, one hundred thousand, two hundred three".