11320320040 has 32 divisors (see below), whose sum is σ = 25512326280. Its totient is φ = 4520731392.

The previous prime is 11320320019. The next prime is 11320320059. The reversal of 11320320040 is 4002302311.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4621552324 + 6698767716 = 67982^2 + 81846^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11320319996 and 11320320023.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206319 + ... + 255358.

Almost surely, 2^11320320040 is an apocalyptic number.

11320320040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11320320040 is an abundant number, since it is smaller than the sum of its proper divisors (14192006240).

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

11320320040 is a wasteful number, since it uses less digits than its factorization.

11320320040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462301 (or 462297 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 11320320040 its reverse (4002302311), we get a palindrome (15322622351).

The spelling of 11320320040 in words is "eleven billion, three hundred twenty million, three hundred twenty thousand, forty".