11431135320 has 256 divisors, whose sum is σ = 39287462400. Its totient is φ = 2635100160.

The previous prime is 11431135307. The next prime is 11431135327. The reversal of 11431135320 is 2353113411.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11431135327) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2562532 + ... + 2566988.

It is an arithmetic number, because the mean of its divisors is an integer number (153466650).

Almost surely, 2^11431135320 is an apocalyptic number.

11431135320 is a gapful number since it is divisible by the number (10) 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 11431135320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19643731200).

11431135320 is an abundant number, since it is smaller than the sum of its proper divisors (27856327080).

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

11431135320 is a wasteful number, since it uses less digits than its factorization.

11431135320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4578 (or 4574 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 11431135320 its reverse (2353113411), we get a palindrome (13784248731).

The spelling of 11431135320 in words is "eleven billion, four hundred thirty-one million, one hundred thirty-five thousand, three hundred twenty".