13805550831 has 16 divisors (see below), whose sum is σ = 18445135104. Its totient is φ = 9184857024.

The previous prime is 13805550821. The next prime is 13805550851.

13805550831 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 13805550831 - 2¹⁷ = 13805419759 is a prime.

It is a super-2 number, since 2×13805550831² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13805550831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13805550821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3825630 + ... + 3829236.

It is an arithmetic number, because the mean of its divisors is an integer number (1152820944).

Almost surely, 2^13805550831 is an apocalyptic number.

13805550831 is a deficient number, since it is larger than the sum of its proper divisors (4639584273).

13805550831 is a wasteful number, since it uses less digits than its factorization.

13805550831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5870.

The product of its (nonzero) digits is 72000, while the sum is 39.

The spelling of 13805550831 in words is "thirteen billion, eight hundred five million, five hundred fifty thousand, eight hundred thirty-one".