311103204043 has 4 divisors (see below), whose sum is σ = 314183433888. Its totient is φ = 308022974200.

The previous prime is 311103203921. The next prime is 311103204047. The reversal of 311103204043 is 340402301113.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311103204043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311103204047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1540114771 + ... + 1540114972.

It is an arithmetic number, because the mean of its divisors is an integer number (78545858472).

Almost surely, 2^311103204043 is an apocalyptic number.

311103204043 is a deficient number, since it is larger than the sum of its proper divisors (3080229845).

311103204043 is a wasteful number, since it uses less digits than its factorization.

311103204043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3080229844.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 311103204043 its reverse (340402301113), we get a palindrome (651505505156).

The spelling of 311103204043 in words is "three hundred eleven billion, one hundred three million, two hundred four thousand, forty-three".