13031707643 has 4 divisors (see below), whose sum is σ = 13031938920. Its totient is φ = 13031476368.

The previous prime is 13031707627. The next prime is 13031707651. The reversal of 13031707643 is 34670713031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34670713031 = 401 ⋅86460631.

It is a cyclic number.

It is not a de Polignac number, because 13031707643 - 2⁴ = 13031707627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13031707603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30143 + ... + 164231.

It is an arithmetic number, because the mean of its divisors is an integer number (3257984730).

Almost surely, 2^13031707643 is an apocalyptic number.

13031707643 is a deficient number, since it is larger than the sum of its proper divisors (231277).

13031707643 is an equidigital number, since it uses as much as digits as its factorization.

13031707643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231276.

The product of its (nonzero) digits is 31752, while the sum is 35.

The spelling of 13031707643 in words is "thirteen billion, thirty-one million, seven hundred seven thousand, six hundred forty-three".