13531202000 has 80 divisors (see below), whose sum is σ = 32927608272. Its totient is φ = 5377881600.

The previous prime is 13531201951. The next prime is 13531202029. The reversal of 13531202000 is 20213531.

It can be written as a sum of positive squares in 8 ways, for example, as 7113910336 + 6417291664 = 84344^2 + 80108^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 13531202000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292454 + ... + 335546.

Almost surely, 2^13531202000 is an apocalyptic number.

13531202000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13531202000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16463804136).

13531202000 is an abundant number, since it is smaller than the sum of its proper divisors (19396406272).

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

13531202000 is a wasteful number, since it uses less digits than its factorization.

13531202000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43273 (or 43257 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

Adding to 13531202000 its reverse (20213531), we get a palindrome (13551415531).

The spelling of 13531202000 in words is "thirteen billion, five hundred thirty-one million, two hundred two thousand".