11112442431 has 16 divisors (see below), whose sum is σ = 14929017600. Its totient is φ = 7352123328.

The previous prime is 11112442427. The next prime is 11112442477. The reversal of 11112442431 is 13424421111.

It is a happy number.

It is not a de Polignac number, because 11112442431 - 2² = 11112442427 is a prime.

It is a super-2 number, since 2×11112442431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112442631) 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 15 ways as a sum of consecutive naturals, for example, 1881475 + ... + 1887371.

It is an arithmetic number, because the mean of its divisors is an integer number (933063600).

Almost surely, 2^11112442431 is an apocalyptic number.

11112442431 is a deficient number, since it is larger than the sum of its proper divisors (3816575169).

11112442431 is a wasteful number, since it uses less digits than its factorization.

11112442431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10558.

The product of its digits is 768, while the sum is 24.

Adding to 11112442431 its reverse (13424421111), we get a palindrome (24536863542).

The spelling of 11112442431 in words is "eleven billion, one hundred twelve million, four hundred forty-two thousand, four hundred thirty-one".