13231406 has 16 divisors (see below), whose sum is σ = 21216816. Its totient is φ = 6166656.

The previous prime is 13231373. The next prime is 13231411. The reversal of 13231406 is 60413231.

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, 1820 + ... + 5456.

It is an arithmetic number, because the mean of its divisors is an integer number (1326051).

Almost surely, 2^13231406 is an apocalyptic number.

It is a pronic number, being equal to 3637×3638.

13231406 is a deficient number, since it is larger than the sum of its proper divisors (7985410).

13231406 is a wasteful number, since it uses less digits than its factorization.

13231406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3763.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 13231406 is about 3637.4999656357. The cubic root of 13231406 is about 236.5204329272.

Adding to 13231406 its reverse (60413231), we get a palindrome (73644637).

The spelling of 13231406 in words is "thirteen million, two hundred thirty-one thousand, four hundred six".