13001431312 has 10 divisors (see below), whose sum is σ = 25190273198. Its totient is φ = 6500715648.

The previous prime is 13001431307. The next prime is 13001431319. The reversal of 13001431312 is 21313410031.

It can be written as a sum of positive squares in only one way, i.e., 12116725776 + 884705536 = 110076^2 + 29744^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13001431312.

It is not an unprimeable number, because it can be changed into a prime (13001431319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406294713 + ... + 406294744.

Almost surely, 2^13001431312 is an apocalyptic number.

It is an amenable number.

13001431312 is a deficient number, since it is larger than the sum of its proper divisors (12188841886).

13001431312 is an equidigital number, since it uses as much as digits as its factorization.

13001431312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812589465 (or 812589459 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13001431312 its reverse (21313410031), we get a palindrome (34314841343).

The spelling of 13001431312 in words is "thirteen billion, one million, four hundred thirty-one thousand, three hundred twelve".