203113240111 has 4 divisors (see below), whose sum is σ = 203114345224. Its totient is φ = 203112135000.

The previous prime is 203113240103. The next prime is 203113240123. The reversal of 203113240111 is 111042311302.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 203113240111 - 2³ = 203113240103 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 (203113240171) 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, 203265 + ... + 668986.

It is an arithmetic number, because the mean of its divisors is an integer number (50778586306).

Almost surely, 2^203113240111 is an apocalyptic number.

203113240111 is a deficient number, since it is larger than the sum of its proper divisors (1105113).

203113240111 is an equidigital number, since it uses as much as digits as its factorization.

203113240111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105112.

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

Adding to 203113240111 its reverse (111042311302), we get a palindrome (314155551413).

The spelling of 203113240111 in words is "two hundred three billion, one hundred thirteen million, two hundred forty thousand, one hundred eleven".