11100144431 has 4 divisors (see below), whose sum is σ = 11104401600. Its totient is φ = 11095887264.

The previous prime is 11100144427. The next prime is 11100144439. The reversal of 11100144431 is 13444100111.

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 11100144431 - 2² = 11100144427 is a prime.

It is a super-2 number, since 2×11100144431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100144439) 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 3 ways as a sum of consecutive naturals, for example, 2124671 + ... + 2129888.

It is an arithmetic number, because the mean of its divisors is an integer number (2776100400).

Almost surely, 2^11100144431 is an apocalyptic number.

11100144431 is a deficient number, since it is larger than the sum of its proper divisors (4257169).

11100144431 is an equidigital number, since it uses as much as digits as its factorization.

11100144431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4257168.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 11100144431 its reverse (13444100111), we get a palindrome (24544244542).

The spelling of 11100144431 in words is "eleven billion, one hundred million, one hundred forty-four thousand, four hundred thirty-one".