13531140220 has 24 divisors (see below), whose sum is σ = 30601194624. Its totient is φ = 4996113216.

The previous prime is 13531140211. The next prime is 13531140229. The reversal of 13531140220 is 2204113531.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13531140211) and next prime (13531140229).

It is a junction number, because it is equal to n+sod(n) for n = 13531140191 and 13531140200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531140229) 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, 26021164 + ... + 26021683.

It is an arithmetic number, because the mean of its divisors is an integer number (1275049776).

Almost surely, 2^13531140220 is an apocalyptic number.

13531140220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13531140220 is an abundant number, since it is smaller than the sum of its proper divisors (17070054404).

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

13531140220 is a wasteful number, since it uses less digits than its factorization.

13531140220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52042869 (or 52042867 counting only the distinct ones).

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

Adding to 13531140220 its reverse (2204113531), we get a palindrome (15735253751).

The spelling of 13531140220 in words is "thirteen billion, five hundred thirty-one million, one hundred forty thousand, two hundred twenty".