210311120203 has 2 divisors, whose sum is σ = 210311120204. Its totient is φ = 210311120202.

The previous prime is 210311120191. The next prime is 210311120267. The reversal of 210311120203 is 302021113012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210311120203 is a prime.

It is a super-2 number, since 2×210311120203² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (210311120003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105155560101 + 105155560102.

It is an arithmetic number, because the mean of its divisors is an integer number (105155560102).

Almost surely, 2^210311120203 is an apocalyptic number.

210311120203 is a deficient number, since it is larger than the sum of its proper divisors (1).

210311120203 is an equidigital number, since it uses as much as digits as its factorization.

210311120203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 210311120203 its reverse (302021113012), we get a palindrome (512332233215).

The spelling of 210311120203 in words is "two hundred ten billion, three hundred eleven million, one hundred twenty thousand, two hundred three".