13531143234 has 128 divisors (see below), whose sum is σ = 34231196160. Its totient is φ = 3476422656.

The previous prime is 13531143233. The next prime is 13531143247. The reversal of 13531143234 is 43234113531.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13531143233) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2005114 + ... + 2011850.

It is an arithmetic number, because the mean of its divisors is an integer number (267431220).

Almost surely, 2^13531143234 is an apocalyptic number.

13531143234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13531143234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17115598080).

13531143234 is an abundant number, since it is smaller than the sum of its proper divisors (20700052926).

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

13531143234 is a wasteful number, since it uses less digits than its factorization.

13531143234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6892.

The product of its digits is 12960, while the sum is 30.

Adding to 13531143234 its reverse (43234113531), we get a palindrome (56765256765).

The spelling of 13531143234 in words is "thirteen billion, five hundred thirty-one million, one hundred forty-three thousand, two hundred thirty-four".