13431326406 has 8 divisors (see below), whose sum is σ = 26862652824. Its totient is φ = 4477108800.

The previous prime is 13431326401. The next prime is 13431326413. The reversal of 13431326406 is 60462313431.

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

13431326406 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13431326401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1119277195 + ... + 1119277206.

It is an arithmetic number, because the mean of its divisors is an integer number (3357831603).

Almost surely, 2^13431326406 is an apocalyptic number.

13431326406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13431326406 is a wasteful number, since it uses less digits than its factorization.

13431326406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238554406.

The product of its (nonzero) digits is 31104, while the sum is 33.

Adding to 13431326406 its reverse (60462313431), we get a palindrome (73893639837).

The spelling of 13431326406 in words is "thirteen billion, four hundred thirty-one million, three hundred twenty-six thousand, four hundred six".