13231405 has 8 divisors (see below), whose sum is σ = 17321184. Its totient is φ = 9622800.

The previous prime is 13231373. The next prime is 13231411. The reversal of 13231405 is 50413231.

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

It is not a de Polignac number, because 13231405 - 2⁵ = 13231373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120231 + ... + 120340.

It is an arithmetic number, because the mean of its divisors is an integer number (2165148).

Almost surely, 2^13231405 is an apocalyptic number.

It is an amenable number.

13231405 is a deficient number, since it is larger than the sum of its proper divisors (4089779).

13231405 is a wasteful number, since it uses less digits than its factorization.

13231405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240587.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13231405 is about 3637.4998281787. The cubic root of 13231405 is about 236.5204269686.

Adding to 13231405 its reverse (50413231), we get a palindrome (63644636).

The spelling of 13231405 in words is "thirteen million, two hundred thirty-one thousand, four hundred five".