13432331 has 12 divisors (see below), whose sum is σ = 15244992. Its totient is φ = 11814000.

The previous prime is 13432327. The next prime is 13432337. The reversal of 13432331 is 13323431.

It is not a de Polignac number, because 13432331 - 2² = 13432327 is a prime.

It is a super-2 number, since 2×13432331² = 360855032187122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13432337) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1961 + ... + 5541.

It is an arithmetic number, because the mean of its divisors is an integer number (1270416).

Almost surely, 2^13432331 is an apocalyptic number.

13432331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13432331 is a deficient number, since it is larger than the sum of its proper divisors (1812661).

13432331 is a wasteful number, since it uses less digits than its factorization.

13432331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3634 (or 3623 counting only the distinct ones).

The product of its digits is 648, while the sum is 20.

The square root of 13432331 is about 3665.0144610902. The cubic root of 13432331 is about 237.7116473462.

Adding to 13432331 its reverse (13323431), we get a palindrome (26755762).

Subtracting from 13432331 its reverse (13323431), we obtain a square (108900 = 330²).

The spelling of 13432331 in words is "thirteen million, four hundred thirty-two thousand, three hundred thirty-one".