203212211311 has 4 divisors (see below), whose sum is σ = 203237329032. Its totient is φ = 203187093592.

The previous prime is 203212211303. The next prime is 203212211353. The reversal of 203212211311 is 113112212302.

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 203212211311 - 2³ = 203212211303 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 (203212211911) 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, 12546721 + ... + 12562906.

It is an arithmetic number, because the mean of its divisors is an integer number (50809332258).

Almost surely, 2^203212211311 is an apocalyptic number.

203212211311 is a deficient number, since it is larger than the sum of its proper divisors (25117721).

203212211311 is an equidigital number, since it uses as much as digits as its factorization.

203212211311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25117720.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 203212211311 its reverse (113112212302), we get a palindrome (316324423613).

Subtracting from 203212211311 its reverse (113112212302), we obtain a palindrome (90099999009).

The spelling of 203212211311 in words is "two hundred three billion, two hundred twelve million, two hundred eleven thousand, three hundred eleven".