13231040240 has 60 divisors (see below), whose sum is σ = 33812986872. Its totient is φ = 4811283840.

The previous prime is 13231040227. The next prime is 13231040293. The reversal of 13231040240 is 4204013231.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 673742 + ... + 693101.

Almost surely, 2^13231040240 is an apocalyptic number.

13231040240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13231040240 is an abundant number, since it is smaller than the sum of its proper divisors (20581946632).

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

13231040240 is a wasteful number, since it uses less digits than its factorization.

13231040240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366878 (or 1366861 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 13231040240 its reverse (4204013231), we get a palindrome (17435053471).

The spelling of 13231040240 in words is "thirteen billion, two hundred thirty-one million, forty thousand, two hundred forty".