13231449152 has 112 divisors (see below), whose sum is σ = 27737866800. Its totient is φ = 6255575040.

The previous prime is 13231449139. The next prime is 13231449157. The reversal of 13231449152 is 25194413231.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1553621056 + 11677828096 = 39416^2 + 108064^2 .

It is not an unprimeable number, because it can be changed into a prime (13231449157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12376874 + ... + 12377942.

It is an arithmetic number, because the mean of its divisors is an integer number (247659525).

Almost surely, 2^13231449152 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 13231449152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13868933400).

13231449152 is an abundant number, since it is smaller than the sum of its proper divisors (14506417648).

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

13231449152 is a wasteful number, since it uses less digits than its factorization.

13231449152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264 (or 1254 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The spelling of 13231449152 in words is "thirteen billion, two hundred thirty-one million, four hundred forty-nine thousand, one hundred fifty-two".