203113201111 has 16 divisors (see below), whose sum is σ = 209399709600. Its totient is φ = 196932736000.

The previous prime is 203113201079. The next prime is 203113201121. The reversal of 203113201111 is 111102311302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 203113201111 - 2⁵ = 203113201079 is a prime.

It is a super-3 number, since 3×203113201111³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203113201121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2057421 + ... + 2153881.

It is an arithmetic number, because the mean of its divisors is an integer number (13087481850).

Almost surely, 2^203113201111 is an apocalyptic number.

203113201111 is a deficient number, since it is larger than the sum of its proper divisors (6286508489).

203113201111 is an equidigital number, since it uses as much as digits as its factorization.

203113201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97010.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 203113201111 its reverse (111102311302), we get a palindrome (314215512413).

The spelling of 203113201111 in words is "two hundred three billion, one hundred thirteen million, two hundred one thousand, one hundred eleven".