13531130220 has 24 divisors (see below), whose sum is σ = 37887164784. Its totient is φ = 3608301376.

The previous prime is 13531130209. The next prime is 13531130233. The reversal of 13531130220 is 2203113531.

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, 112759359 + ... + 112759478.

It is an arithmetic number, because the mean of its divisors is an integer number (1578631866).

Almost surely, 2^13531130220 is an apocalyptic number.

13531130220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13531130220 is an abundant number, since it is smaller than the sum of its proper divisors (24356034564).

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

13531130220 is a wasteful number, since it uses less digits than its factorization.

13531130220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225518849 (or 225518847 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

Adding to 13531130220 its reverse (2203113531), we get a palindrome (15734243751).

The spelling of 13531130220 in words is "thirteen billion, five hundred thirty-one million, one hundred thirty thousand, two hundred twenty".