11321310311 has 4 divisors (see below), whose sum is σ = 11506905624. Its totient is φ = 11135715000.

The previous prime is 11321310277. The next prime is 11321310313. The reversal of 11321310311 is 11301312311.

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-11321310311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11321310311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321310313) 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, 92797565 + ... + 92797686.

It is an arithmetic number, because the mean of its divisors is an integer number (2876726406).

Almost surely, 2^11321310311 is an apocalyptic number.

11321310311 is a deficient number, since it is larger than the sum of its proper divisors (185595313).

11321310311 is an equidigital number, since it uses as much as digits as its factorization.

11321310311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185595312.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 11321310311 its reverse (11301312311), we get a palindrome (22622622622).

The spelling of 11321310311 in words is "eleven billion, three hundred twenty-one million, three hundred ten thousand, three hundred eleven".