13683647631 has 4 divisors (see below), whose sum is σ = 18244863512. Its totient is φ = 9122431752.

The previous prime is 13683647567. The next prime is 13683647671. The reversal of 13683647631 is 13674638631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13674638631 = 3 ⋅4558212877.

It is not a de Polignac number, because 13683647631 - 2⁶ = 13683647567 is a prime.

It is a super-2 number, since 2×13683647631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13683647671) 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, 2280607936 + ... + 2280607941.

It is an arithmetic number, because the mean of its divisors is an integer number (4561215878).

Almost surely, 2^13683647631 is an apocalyptic number.

13683647631 is a deficient number, since it is larger than the sum of its proper divisors (4561215881).

13683647631 is an equidigital number, since it uses as much as digits as its factorization.

13683647631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4561215880.

The product of its digits is 1306368, while the sum is 48.

The spelling of 13683647631 in words is "thirteen billion, six hundred eighty-three million, six hundred forty-seven thousand, six hundred thirty-one".