11123431032 has 64 divisors (see below), whose sum is σ = 31801075200. Its totient is φ = 3176138880.

The previous prime is 11123431001. The next prime is 11123431037. The reversal of 11123431032 is 23013432111.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123431037) 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, 260557 + ... + 300227.

It is an arithmetic number, because the mean of its divisors is an integer number (496891800).

Almost surely, 2^11123431032 is an apocalyptic number.

11123431032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11123431032 is an abundant number, since it is smaller than the sum of its proper divisors (20677644168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11123431032 is a wasteful number, since it uses less digits than its factorization.

11123431032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41356 (or 41352 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 11123431032 its reverse (23013432111), we get a palindrome (34136863143).

The spelling of 11123431032 in words is "eleven billion, one hundred twenty-three million, four hundred thirty-one thousand, thirty-two".