11331434140 has 96 divisors (see below), whose sum is σ = 25845817536. Its totient is φ = 4148305920.

The previous prime is 11331434137. The next prime is 11331434183. The reversal of 11331434140 is 4143413311.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30378994 + ... + 30379366.

It is an arithmetic number, because the mean of its divisors is an integer number (269227266).

Almost surely, 2^11331434140 is an apocalyptic number.

11331434140 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 11331434140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12922908768).

11331434140 is an abundant number, since it is smaller than the sum of its proper divisors (14514383396).

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

11331434140 is a wasteful number, since it uses less digits than its factorization.

11331434140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079 (or 1077 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 11331434140 its reverse (4143413311), we get a palindrome (15474847451).

The spelling of 11331434140 in words is "eleven billion, three hundred thirty-one million, four hundred thirty-four thousand, one hundred forty".