203111023232011 has 4 divisors (see below), whose sum is σ = 206142531041512. Its totient is φ = 200079515422512.

The previous prime is 203111023231993. The next prime is 203111023232017. The reversal of 203111023232011 is 110232320111302.

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 203111023232011 - 2³³ = 203102433297419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203111023232017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1515753904650 + ... + 1515753904783.

It is an arithmetic number, because the mean of its divisors is an integer number (51535632760378).

Almost surely, 2^{203111023232011} is an apocalyptic number.

203111023232011 is a deficient number, since it is larger than the sum of its proper divisors (3031507809501).

203111023232011 is an equidigital number, since it uses as much as digits as its factorization.

203111023232011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3031507809500.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 203111023232011 its reverse (110232320111302), we get a palindrome (313343343343313).

The spelling of 203111023232011 in words is "two hundred three trillion, one hundred eleven billion, twenty-three million, two hundred thirty-two thousand, eleven".