311144204011 has 4 divisors (see below), whose sum is σ = 311146660000. Its totient is φ = 311141748024.

The previous prime is 311144203969. The next prime is 311144204071. The reversal of 311144204011 is 110402441113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 311144204011 - 2⁷ = 311144203883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311144204071) 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, 1026996 + ... + 1294993.

It is an arithmetic number, because the mean of its divisors is an integer number (77786665000).

Almost surely, 2^311144204011 is an apocalyptic number.

311144204011 is a deficient number, since it is larger than the sum of its proper divisors (2455989).

311144204011 is a wasteful number, since it uses less digits than its factorization.

311144204011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2455988.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 311144204011 its reverse (110402441113), we get a palindrome (421546645124).

The spelling of 311144204011 in words is "three hundred eleven billion, one hundred forty-four million, two hundred four thousand, eleven".