12831534 has 40 divisors (see below), whose sum is σ = 29069040. Its totient is φ = 4230144.

The previous prime is 12831529. The next prime is 12831541. The reversal of 12831534 is 43513821.

It is a happy number.

12831534 is a `hidden beast` number, since 128 + 3 + 1 + 534 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 12831498 and 12831507.

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 19 ways as a sum of consecutive naturals, for example, 16302 + ... + 17070.

It is an arithmetic number, because the mean of its divisors is an integer number (726726).

Almost surely, 2^12831534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12831534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14534520).

12831534 is an abundant number, since it is smaller than the sum of its proper divisors (16237506).

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

12831534 is a wasteful number, since it uses less digits than its factorization.

12831534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886 (or 877 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 12831534 is about 3582.1130635422. The cubic root of 12831534 is about 234.1133573059.

The spelling of 12831534 in words is "twelve million, eight hundred thirty-one thousand, five hundred thirty-four".