2002031311111 has 6 divisors (see below), whose sum is σ = 2167880058960. Its totient is φ = 1848028902408.

The previous prime is 2002031311073. The next prime is 2002031311127. The reversal of 2002031311111 is 1111131302002.

It is a happy number.

It is not a de Polignac number, because 2002031311111 - 2⁹ = 2002031310599 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 (2002031315111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5923169391 + ... + 5923169728.

It is an arithmetic number, because the mean of its divisors is an integer number (361313343160).

Almost surely, 2^{2002031311111} is an apocalyptic number.

2002031311111 is a deficient number, since it is larger than the sum of its proper divisors (165848747849).

2002031311111 is a wasteful number, since it uses less digits than its factorization.

2002031311111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11846339145 (or 11846339132 counting only the distinct ones).

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

Adding to 2002031311111 its reverse (1111131302002), we get a palindrome (3113162613113).

The spelling of 2002031311111 in words is "two trillion, two billion, thirty-one million, three hundred eleven thousand, one hundred eleven".