13431234 has 16 divisors (see below), whose sum is σ = 27789120. Its totient is φ = 4322640.

The previous prime is 13431217. The next prime is 13431239. The reversal of 13431234 is 43213431.

13431234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a zygodrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 13431234.

It is not an unprimeable number, because it can be changed into a prime (13431239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38422 + ... + 38769.

It is an arithmetic number, because the mean of its divisors is an integer number (1736820).

Almost surely, 2^13431234 is an apocalyptic number.

13431234 is an abundant number, since it is smaller than the sum of its proper divisors (14357886).

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

13431234 is a wasteful number, since it uses less digits than its factorization.

13431234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77225.

The product of its digits is 864, while the sum is 21.

The square root of 13431234 is about 3664.8647996891. The cubic root of 13431234 is about 237.7051759756.

Adding to 13431234 its reverse (43213431), we get a palindrome (56644665).

The spelling of 13431234 in words is "thirteen million, four hundred thirty-one thousand, two hundred thirty-four".