13031313243 has 16 divisors (see below), whose sum is σ = 18784451616. Its totient is φ = 7988060160.

The previous prime is 13031313227. The next prime is 13031313257. The reversal of 13031313243 is 34231313031.

It is a happy number.

13031313243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13031313243 - 2⁴ = 13031313227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13031313143) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 640048 + ... + 660093.

It is an arithmetic number, because the mean of its divisors is an integer number (1174028226).

Almost surely, 2^13031313243 is an apocalyptic number.

13031313243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13031313243 is a deficient number, since it is larger than the sum of its proper divisors (5753138373).

13031313243 is a wasteful number, since it uses less digits than its factorization.

13031313243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300414.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 13031313243 its reverse (34231313031), we get a palindrome (47262626274).

The spelling of 13031313243 in words is "thirteen billion, thirty-one million, three hundred thirteen thousand, two hundred forty-three".