20000312311111 has 16 divisors (see below), whose sum is σ = 21981541351968. Its totient is φ = 18046298483200.

The previous prime is 20000312311079. The next prime is 20000312311153. The reversal of 20000312311111 is 11111321300002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20000312311111 - 2⁵ = 20000312311079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000312341111) 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, 7700331 + ... + 9964723.

It is an arithmetic number, because the mean of its divisors is an integer number (1373846334498).

Almost surely, 2^{20000312311111} is an apocalyptic number.

20000312311111 is a deficient number, since it is larger than the sum of its proper divisors (1981229040857).

20000312311111 is a wasteful number, since it uses less digits than its factorization.

20000312311111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270402.

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

Adding to 20000312311111 its reverse (11111321300002), we get a palindrome (31111633611113).

The spelling of 20000312311111 in words is "twenty trillion, three hundred twelve million, three hundred eleven thousand, one hundred eleven".