13438631227 has 8 divisors (see below), whose sum is σ = 15369209856. Its totient is φ = 11510746152.

The previous prime is 13438631221. The next prime is 13438631237. The reversal of 13438631227 is 72213683431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13438631227 - 2²³ = 13430242619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13438631227.

It is not an unprimeable number, because it can be changed into a prime (13438631221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662683 + ... + 682660.

It is an arithmetic number, because the mean of its divisors is an integer number (1921151232).

Almost surely, 2^13438631227 is an apocalyptic number.

13438631227 is a deficient number, since it is larger than the sum of its proper divisors (1930578629).

13438631227 is a wasteful number, since it uses less digits than its factorization.

13438631227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346777.

The product of its digits is 145152, while the sum is 40.

The spelling of 13438631227 in words is "thirteen billion, four hundred thirty-eight million, six hundred thirty-one thousand, two hundred twenty-seven".