13001231312 has 10 divisors (see below), whose sum is σ = 25189885698. Its totient is φ = 6500615648.

The previous prime is 13001231293. The next prime is 13001231333. The reversal of 13001231312 is 21313210031.

13001231312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11441297296 + 1559934016 = 106964^2 + 39496^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406288463 + ... + 406288494.

Almost surely, 2^13001231312 is an apocalyptic number.

It is an amenable number.

13001231312 is a deficient number, since it is larger than the sum of its proper divisors (12188654386).

13001231312 is an equidigital number, since it uses as much as digits as its factorization.

13001231312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812576965 (or 812576959 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 13001231312 its reverse (21313210031), we get a palindrome (34314441343).

The spelling of 13001231312 in words is "thirteen billion, one million, two hundred thirty-one thousand, three hundred twelve".