11321115311 has 8 divisors (see below), whose sum is σ = 12354788304. Its totient is φ = 10288189120.

The previous prime is 11321115307. The next prime is 11321115317. The reversal of 11321115311 is 11351112311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11321115311 - 2² = 11321115307 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 (11321115317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154760 + ... + 215853.

It is an arithmetic number, because the mean of its divisors is an integer number (1544348538).

Almost surely, 2^11321115311 is an apocalyptic number.

11321115311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11321115311 is a deficient number, since it is larger than the sum of its proper divisors (1033672993).

11321115311 is a wasteful number, since it uses less digits than its factorization.

11321115311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373401.

The product of its digits is 90, while the sum is 20.

Adding to 11321115311 its reverse (11351112311), we get a palindrome (22672227622).

The spelling of 11321115311 in words is "eleven billion, three hundred twenty-one million, one hundred fifteen thousand, three hundred eleven".