11431124011 has 4 divisors (see below), whose sum is σ = 11432361024. Its totient is φ = 11429887000.

The previous prime is 11431124009. The next prime is 11431124021. The reversal of 11431124011 is 11042113411.

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 11431124011 - 2¹ = 11431124009 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 11431124011.

It is not an unprimeable number, because it can be changed into a prime (11431124021) 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, 604540 + ... + 623161.

It is an arithmetic number, because the mean of its divisors is an integer number (2858090256).

Almost surely, 2^11431124011 is an apocalyptic number.

11431124011 is a deficient number, since it is larger than the sum of its proper divisors (1237013).

11431124011 is an equidigital number, since it uses as much as digits as its factorization.

11431124011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237012.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 11431124011 its reverse (11042113411), we get a palindrome (22473237422).

The spelling of 11431124011 in words is "eleven billion, four hundred thirty-one million, one hundred twenty-four thousand, eleven".