11311021103009 has 4 divisors (see below), whose sum is σ = 11324281386516. Its totient is φ = 11297760819504.

The previous prime is 11311021103003. The next prime is 11311021103033. The reversal of 11311021103009 is 90030112011311.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 354239232400 + 10956781870609 = 595180^2 + 3310103^2 .

It is a cyclic number.

It is not a de Polignac number, because 11311021103009 - 2⁸ = 11311021102753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11311021103003) 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, 6630140474 + ... + 6630142179.

It is an arithmetic number, because the mean of its divisors is an integer number (2831070346629).

Almost surely, 2^{11311021103009} is an apocalyptic number.

It is an amenable number.

11311021103009 is a deficient number, since it is larger than the sum of its proper divisors (13260283507).

11311021103009 is an equidigital number, since it uses as much as digits as its factorization.

11311021103009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13260283506.

The product of its (nonzero) digits is 162, while the sum is 23.

The spelling of 11311021103009 in words is "eleven trillion, three hundred eleven billion, twenty-one million, one hundred three thousand, nine".