11031021409 has 2 divisors, whose sum is σ = 11031021410. Its totient is φ = 11031021408.

The previous prime is 11031021301. The next prime is 11031021413. The reversal of 11031021409 is 90412013011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11030880784 + 140625 = 105028^2 + 375^2 .

It is an emirp because it is prime and its reverse (90412013011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11031021409 - 2²⁹ = 10494150497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11031021409.

It is not a weakly prime, because it can be changed into another prime (11031021439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5515510704 + 5515510705.

It is an arithmetic number, because the mean of its divisors is an integer number (5515510705).

Almost surely, 2^11031021409 is an apocalyptic number.

It is an amenable number.

11031021409 is a deficient number, since it is larger than the sum of its proper divisors (1).

11031021409 is an equidigital number, since it uses as much as digits as its factorization.

11031021409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 11031021409 in words is "eleven billion, thirty-one million, twenty-one thousand, four hundred nine".