13431212 has 12 divisors (see below), whose sum is σ = 23836176. Its totient is φ = 6620880.

The previous prime is 13431191. The next prime is 13431217. The reversal of 13431212 is 21213431.

It is not an unprimeable number, because it can be changed into a prime (13431217) 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 3 ways as a sum of consecutive naturals, for example, 23363 + ... + 23930.

It is an arithmetic number, because the mean of its divisors is an integer number (1986348).

Almost surely, 2^13431212 is an apocalyptic number.

It is an amenable number.

13431212 is a deficient number, since it is larger than the sum of its proper divisors (10404964).

13431212 is a wasteful number, since it uses less digits than its factorization.

13431212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47368 (or 47366 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 13431212 is about 3664.8617982129. The cubic root of 13431212 is about 237.7050461906.

Adding to 13431212 its reverse (21213431), we get a palindrome (34644643).

The spelling of 13431212 in words is "thirteen million, four hundred thirty-one thousand, two hundred twelve".