11431313234440 has 128 divisors (see below), whose sum is σ = 28666090252800. Its totient is φ = 4066918497280.

The previous prime is 11431313234339. The next prime is 11431313234477. The reversal of 11431313234440 is 4443231313411.

It is a super-2 number, since 2×11431313234440² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11431313234396 and 11431313234405.

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, 57577422 + ... + 57775618.

It is an arithmetic number, because the mean of its divisors is an integer number (223953830100).

Almost surely, 2^{11431313234440} is an apocalyptic number.

11431313234440 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 11431313234440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14333045126400).

11431313234440 is an abundant number, since it is smaller than the sum of its proper divisors (17234777018360).

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

11431313234440 is a wasteful number, since it uses less digits than its factorization.

11431313234440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201055 (or 201051 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

Adding to 11431313234440 its reverse (4443231313411), we get a palindrome (15874544547851).

The spelling of 11431313234440 in words is "eleven trillion, four hundred thirty-one billion, three hundred thirteen million, two hundred thirty-four thousand, four hundred forty".