13512131234 has 16 divisors (see below), whose sum is σ = 23402456448. Its totient is φ = 5731212672.

The previous prime is 13512131209. The next prime is 13512131249. The reversal of 13512131234 is 43213121531.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4973654 + ... + 4976369.

It is an arithmetic number, because the mean of its divisors is an integer number (1462653528).

Almost surely, 2^13512131234 is an apocalyptic number.

13512131234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13512131234 is a deficient number, since it is larger than the sum of its proper divisors (9890325214).

13512131234 is an equidigital number, since it uses as much as digits as its factorization.

13512131234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9950129.

The product of its digits is 2160, while the sum is 26.

Adding to 13512131234 its reverse (43213121531), we get a palindrome (56725252765).

The spelling of 13512131234 in words is "thirteen billion, five hundred twelve million, one hundred thirty-one thousand, two hundred thirty-four".