11197131907 has 4 divisors (see below), whose sum is σ = 12058449760. Its totient is φ = 10335814056.

The previous prime is 11197131899. The next prime is 11197131941. The reversal of 11197131907 is 70913179111.

11197131907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11197131907 - 2³ = 11197131899 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 11197131907.

It is not an unprimeable number, because it can be changed into a prime (11197131947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430658907 + ... + 430658932.

It is an arithmetic number, because the mean of its divisors is an integer number (3014612440).

Almost surely, 2^11197131907 is an apocalyptic number.

11197131907 is a deficient number, since it is larger than the sum of its proper divisors (861317853).

11197131907 is an equidigital number, since it uses as much as digits as its factorization.

11197131907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861317852.

The product of its (nonzero) digits is 11907, while the sum is 40.

The spelling of 11197131907 in words is "eleven billion, one hundred ninety-seven million, one hundred thirty-one thousand, nine hundred seven".