13531322000 has 160 divisors (see below), whose sum is σ = 37922287104. Its totient is φ = 4573632000.

The previous prime is 13531321987. The next prime is 13531322009. The reversal of 13531322000 is 22313531.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (13531322009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 987194 + ... + 1000806.

Almost surely, 2^13531322000 is an apocalyptic number.

13531322000 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 13531322000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18961143552).

13531322000 is an abundant number, since it is smaller than the sum of its proper divisors (24390965104).

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

13531322000 is a wasteful number, since it uses less digits than its factorization.

13531322000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13714 (or 13698 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

Adding to 13531322000 its reverse (22313531), we get a palindrome (13553635531).

The spelling of 13531322000 in words is "thirteen billion, five hundred thirty-one million, three hundred twenty-two thousand".