11321730297 has 12 divisors (see below), whose sum is σ = 16917528420. Its totient is φ = 7287550368.

The previous prime is 11321730281. The next prime is 11321730323. The reversal of 11321730297 is 79203712311.

It is a happy number.

11321730297 is a `hidden beast` number, since 11 + 321 + 7 + 30 + 297 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9255209616 + 2066520681 = 96204^2 + 45459^2 .

It is not a de Polignac number, because 11321730297 - 2⁴ = 11321730281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11321730257) 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 11 ways as a sum of consecutive naturals, for example, 21688878 + ... + 21689399.

It is an arithmetic number, because the mean of its divisors is an integer number (1409794035).

Almost surely, 2^11321730297 is an apocalyptic number.

It is an amenable number.

11321730297 is a deficient number, since it is larger than the sum of its proper divisors (5595798123).

11321730297 is a wasteful number, since it uses less digits than its factorization.

11321730297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43378312 (or 43378309 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The spelling of 11321730297 in words is "eleven billion, three hundred twenty-one million, seven hundred thirty thousand, two hundred ninety-seven".