11303312311 has 4 divisors (see below), whose sum is σ = 11305266624. Its totient is φ = 11301358000.

The previous prime is 11303312309. The next prime is 11303312353. The reversal of 11303312311 is 11321330311.

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 11303312311 - 2¹ = 11303312309 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 (11303312381) 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, 968455 + ... + 980056.

It is an arithmetic number, because the mean of its divisors is an integer number (2826316656).

Almost surely, 2^11303312311 is an apocalyptic number.

11303312311 is a deficient number, since it is larger than the sum of its proper divisors (1954313).

11303312311 is an equidigital number, since it uses as much as digits as its factorization.

11303312311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954312.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 11303312311 its reverse (11321330311), we get a palindrome (22624642622).

The spelling of 11303312311 in words is "eleven billion, three hundred three million, three hundred twelve thousand, three hundred eleven".