210311320203 has 6 divisors (see below), whose sum is σ = 303783018084. Its totient is φ = 140207546796.

The previous prime is 210311320171. The next prime is 210311320217. The reversal of 210311320203 is 302023113012.

210311320203 is a `hidden beast` number, since 2 + 10 + 311 + 320 + 20 + 3 = 666.

It is not a de Polignac number, because 210311320203 - 2⁵ = 210311320171 is a prime.

It is a super-2 number, since 2×210311320203² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210311320253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11683962225 + ... + 11683962242.

It is an arithmetic number, because the mean of its divisors is an integer number (50630503014).

Almost surely, 2^210311320203 is an apocalyptic number.

210311320203 is a deficient number, since it is larger than the sum of its proper divisors (93471697881).

210311320203 is a wasteful number, since it uses less digits than its factorization.

210311320203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23367924473 (or 23367924470 counting only the distinct ones).

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

Adding to 210311320203 its reverse (302023113012), we get a palindrome (512334433215).

The spelling of 210311320203 in words is "two hundred ten billion, three hundred eleven million, three hundred twenty thousand, two hundred three".