203111000011 has 8 divisors (see below), whose sum is σ = 216346485600. Its totient is φ = 190018601088.

The previous prime is 203111000003. The next prime is 203111000063. The reversal of 203111000011 is 110000111302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203111000011 - 2³ = 203111000003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203111004011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35768736 + ... + 35774413.

It is an arithmetic number, because the mean of its divisors is an integer number (27043310700).

Almost surely, 2^203111000011 is an apocalyptic number.

203111000011 is a deficient number, since it is larger than the sum of its proper divisors (13235485589).

203111000011 is a wasteful number, since it uses less digits than its factorization.

203111000011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71543333.

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 203111000011 its reverse (110000111302), we get a palindrome (313111111313).

The spelling of 203111000011 in words is "two hundred three billion, one hundred eleven million, eleven", and thus it is an aban number.