203212302311 has 4 divisors (see below), whose sum is σ = 203222784192. Its totient is φ = 203201820432.

The previous prime is 203212302259. The next prime is 203212302353. The reversal of 203212302311 is 113203212302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203212302311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203212305311) 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, 5211806 + ... + 5250651.

It is an arithmetic number, because the mean of its divisors is an integer number (50805696048).

Almost surely, 2^203212302311 is an apocalyptic number.

203212302311 is a deficient number, since it is larger than the sum of its proper divisors (10481881).

203212302311 is a wasteful number, since it uses less digits than its factorization.

203212302311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10481880.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 203212302311 its reverse (113203212302), we get a palindrome (316415514613).

Subtracting from 203212302311 its reverse (113203212302), we obtain a palindrome (90009090009).

The spelling of 203212302311 in words is "two hundred three billion, two hundred twelve million, three hundred two thousand, three hundred eleven".