13500420631 has 16 divisors (see below), whose sum is σ = 13884923808. Its totient is φ = 13121712000.

The previous prime is 13500420617. The next prime is 13500420643. The reversal of 13500420631 is 13602400531.

It is a cyclic number.

It is not a de Polignac number, because 13500420631 - 2¹⁵ = 13500387863 is a prime.

It is a super-2 number, since 2×13500420631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13500420596 and 13500420605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13500420611) 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 in 15 ways as a sum of consecutive naturals, for example, 3614641 + ... + 3618373.

It is an arithmetic number, because the mean of its divisors is an integer number (867807738).

Almost surely, 2^13500420631 is an apocalyptic number.

13500420631 is a deficient number, since it is larger than the sum of its proper divisors (384503177).

13500420631 is a wasteful number, since it uses less digits than its factorization.

13500420631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4482.

The product of its (nonzero) digits is 2160, while the sum is 25.

The spelling of 13500420631 in words is "thirteen billion, five hundred million, four hundred twenty thousand, six hundred thirty-one".