13531141320 has 128 divisors (see below), whose sum is σ = 42068332800. Its totient is φ = 3477648384.

The previous prime is 13531141319. The next prime is 13531141333. The reversal of 13531141320 is 2314113531.

It is a super-2 number, since 2×13531141320² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2130069 + ... + 2136411.

It is an arithmetic number, because the mean of its divisors is an integer number (328658850).

Almost surely, 2^13531141320 is an apocalyptic number.

13531141320 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 13531141320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21034166400).

13531141320 is an abundant number, since it is smaller than the sum of its proper divisors (28537191480).

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

13531141320 is a wasteful number, since it uses less digits than its factorization.

13531141320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6999 (or 6995 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 13531141320 its reverse (2314113531), we get a palindrome (15845254851).

The spelling of 13531141320 in words is "thirteen billion, five hundred thirty-one million, one hundred forty-one thousand, three hundred twenty".