11021031311 has 8 divisors (see below), whose sum is σ = 11331999360. Its totient is φ = 10713879072.

The previous prime is 11021031299. The next prime is 11021031341. The reversal of 11021031311 is 11313012011.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11021031311 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 (11021031341) 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 7 ways as a sum of consecutive naturals, for example, 948095 + ... + 959648.

It is an arithmetic number, because the mean of its divisors is an integer number (1416499920).

Almost surely, 2^11021031311 is an apocalyptic number.

11021031311 is a deficient number, since it is larger than the sum of its proper divisors (310968049).

11021031311 is a wasteful number, since it uses less digits than its factorization.

11021031311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1907905.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 11021031311 its reverse (11313012011), we get a palindrome (22334043322).

The spelling of 11021031311 in words is "eleven billion, twenty-one million, thirty-one thousand, three hundred eleven".