13243105431252 has 72 divisors (see below), whose sum is σ = 33847191705600. Its totient is φ = 4365442211328.

The previous prime is 13243105431233. The next prime is 13243105431289. The reversal of 13243105431252 is 25213450134231.

13243105431252 is a `hidden beast` number, since 1 + 3 + 2 + 43 + 10 + 543 + 12 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2983699 + ... + 5948837.

It is an arithmetic number, because the mean of its divisors is an integer number (470099884800).

Almost surely, 2^{13243105431252} is an apocalyptic number.

13243105431252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13243105431252 is an abundant number, since it is smaller than the sum of its proper divisors (20604086274348).

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

13243105431252 is a wasteful number, since it uses less digits than its factorization.

13243105431252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2966525 (or 2966520 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 13243105431252 its reverse (25213450134231), we get a palindrome (38456555565483).

The spelling of 13243105431252 in words is "thirteen trillion, two hundred forty-three billion, one hundred five million, four hundred thirty-one thousand, two hundred fifty-two".