13040163631 has 16 divisors (see below), whose sum is σ = 14418685728. Its totient is φ = 11694672000.

The previous prime is 13040163607. The next prime is 13040163637. The reversal of 13040163631 is 13636104031.

It is not a de Polignac number, because 13040163631 - 2⁷ = 13040163503 is a prime.

It is a super-2 number, since 2×13040163631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13040163631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13040163637) 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, 286561 + ... + 328933.

It is an arithmetic number, because the mean of its divisors is an integer number (901167858).

Almost surely, 2^13040163631 is an apocalyptic number.

13040163631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13040163631 is a deficient number, since it is larger than the sum of its proper divisors (1378522097).

13040163631 is a wasteful number, since it uses less digits than its factorization.

13040163631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42762.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 13040163631 its reverse (13636104031), we get a palindrome (26676267662).

It can be divided in two parts, 13040 and 163631, that added together give a palindrome (176671).

The spelling of 13040163631 in words is "thirteen billion, forty million, one hundred sixty-three thousand, six hundred thirty-one".