11431144452 has 144 divisors (see below), whose sum is σ = 33114977280. Its totient is φ = 3005069184.

The previous prime is 11431144451. The next prime is 11431144493. The reversal of 11431144452 is 25444113411.

It is not an unprimeable number, because it can be changed into a prime (11431144451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5095243 + ... + 5097485.

It is an arithmetic number, because the mean of its divisors is an integer number (229965120).

Almost surely, 2^11431144452 is an apocalyptic number.

11431144452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11431144452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16557488640).

11431144452 is an abundant number, since it is smaller than the sum of its proper divisors (21683832828).

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

11431144452 is a wasteful number, since it uses less digits than its factorization.

11431144452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2642 (or 2627 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

Adding to 11431144452 its reverse (25444113411), we get a palindrome (36875257863).

The spelling of 11431144452 in words is "eleven billion, four hundred thirty-one million, one hundred forty-four thousand, four hundred fifty-two".