13531140420 has 48 divisors (see below), whose sum is σ = 43299650688. Its totient is φ = 3092832000.

The previous prime is 13531140391. The next prime is 13531140443. The reversal of 13531140420 is 2404113531.

It is a happy number.

It is a super-2 number, since 2×13531140420² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16108081 + ... + 16108920.

It is an arithmetic number, because the mean of its divisors is an integer number (902076056).

Almost surely, 2^13531140420 is an apocalyptic number.

13531140420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13531140420 is an abundant number, since it is smaller than the sum of its proper divisors (29768510268).

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

13531140420 is a wasteful number, since it uses less digits than its factorization.

13531140420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32217020 (or 32217018 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 13531140420 its reverse (2404113531), we get a palindrome (15935253951).

The spelling of 13531140420 in words is "thirteen billion, five hundred thirty-one million, one hundred forty thousand, four hundred twenty".