11101132431 has 8 divisors (see below), whose sum is σ = 16446122160. Its totient is φ = 7400754936.

The previous prime is 11101132423. The next prime is 11101132463. The reversal of 11101132431 is 13423110111.

It is a happy number.

11101132431 is a `hidden beast` number, since 1 + 1 + 101 + 132 + 431 = 666.

It is not a de Polignac number, because 11101132431 - 2³ = 11101132423 is a prime.

It is a super-2 number, since 2×11101132431² (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 (11101130431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205576500 + ... + 205576553.

It is an arithmetic number, because the mean of its divisors is an integer number (2055765270).

Almost surely, 2^11101132431 is an apocalyptic number.

11101132431 is a deficient number, since it is larger than the sum of its proper divisors (5344989729).

11101132431 is an equidigital number, since it uses as much as digits as its factorization.

11101132431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411153062 (or 411153056 counting only the distinct ones).

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

Adding to 11101132431 its reverse (13423110111), we get a palindrome (24524242542).

The spelling of 11101132431 in words is "eleven billion, one hundred one million, one hundred thirty-two thousand, four hundred thirty-one".