11113201431 has 16 divisors (see below), whose sum is σ = 16468631520. Its totient is φ = 7406717760.

The previous prime is 11113201423. The next prime is 11113201457. The reversal of 11113201431 is 13410231111.

It is a happy number.

It is not a de Polignac number, because 11113201431 - 2³ = 11113201423 is a prime.

It is a super-2 number, since 2×11113201431² (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 (11113201471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43141 + ... + 155201.

It is an arithmetic number, because the mean of its divisors is an integer number (1029289470).

Almost surely, 2^11113201431 is an apocalyptic number.

11113201431 is a deficient number, since it is larger than the sum of its proper divisors (5355430089).

11113201431 is a wasteful number, since it uses less digits than its factorization.

11113201431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115743 (or 115737 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 11113201431 its reverse (13410231111), we get a palindrome (24523432542).

The spelling of 11113201431 in words is "eleven billion, one hundred thirteen million, two hundred one thousand, four hundred thirty-one".