13421134431 has 32 divisors (see below), whose sum is σ = 21124747200. Its totient is φ = 8405389440.

The previous prime is 13421134361. The next prime is 13421134549. The reversal of 13421134431 is 13443112431.

13421134431 is a `hidden beast` number, since 1 + 3 + 4 + 211 + 3 + 443 + 1 = 666.

It is not a de Polignac number, because 13421134431 - 2¹⁴ = 13421118047 is a prime.

It is a super-2 number, since 2×13421134431² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 13421134395 and 13421134404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13421134231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202660 + ... + 260601.

It is an arithmetic number, because the mean of its divisors is an integer number (660148350).

Almost surely, 2^13421134431 is an apocalyptic number.

13421134431 is a deficient number, since it is larger than the sum of its proper divisors (7703612769).

13421134431 is a wasteful number, since it uses less digits than its factorization.

13421134431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463336 (or 463330 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 13421134431 its reverse (13443112431), we get a palindrome (26864246862).

The spelling of 13421134431 in words is "thirteen billion, four hundred twenty-one million, one hundred thirty-four thousand, four hundred thirty-one".