13531020352 has 56 divisors (see below), whose sum is σ = 27370735200. Its totient is φ = 6635006976.

The previous prime is 13531020329. The next prime is 13531020383. The reversal of 13531020352 is 25302013531.

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, 1668724 + ... + 1676812.

Almost surely, 2^13531020352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13531020352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13685367600).

13531020352 is an abundant number, since it is smaller than the sum of its proper divisors (13839714848).

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

13531020352 is an equidigital number, since it uses as much as digits as its factorization.

13531020352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8603 (or 8593 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

Adding to 13531020352 its reverse (25302013531), we get a palindrome (38833033883).

The spelling of 13531020352 in words is "thirteen billion, five hundred thirty-one million, twenty thousand, three hundred fifty-two".