11331021311 has 8 divisors (see below), whose sum is σ = 11365614144. Its totient is φ = 11296460800.

The previous prime is 11331021281. The next prime is 11331021319. The reversal of 11331021311 is 11312013311.

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

It is a cyclic number.

It is not a de Polignac number, because 11331021311 - 2²² = 11326827007 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 11331021311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331021319) 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, 820415 + ... + 834111.

It is an arithmetic number, because the mean of its divisors is an integer number (1420701768).

Almost surely, 2^11331021311 is an apocalyptic number.

11331021311 is a deficient number, since it is larger than the sum of its proper divisors (34592833).

11331021311 is a wasteful number, since it uses less digits than its factorization.

11331021311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16161.

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

Adding to 11331021311 its reverse (11312013311), we get a palindrome (22643034622).

The spelling of 11331021311 in words is "eleven billion, three hundred thirty-one million, twenty-one thousand, three hundred eleven".