13531202140 has 24 divisors (see below), whose sum is σ = 28540712592. Its totient is φ = 5388635520.

The previous prime is 13531202129. The next prime is 13531202141. The reversal of 13531202140 is 4120213531.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531202141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1485681 + ... + 1494760.

It is an arithmetic number, because the mean of its divisors is an integer number (1189196358).

Almost surely, 2^13531202140 is an apocalyptic number.

13531202140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13531202140 is an abundant number, since it is smaller than the sum of its proper divisors (15009510452).

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

13531202140 is a wasteful number, since it uses less digits than its factorization.

13531202140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2980677 (or 2980675 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 13531202140 its reverse (4120213531), we get a palindrome (17651415671).

The spelling of 13531202140 in words is "thirteen billion, five hundred thirty-one million, two hundred two thousand, one hundred forty".