12831489 has 48 divisors (see below), whose sum is σ = 21625344. Its totient is φ = 7257600.

The previous prime is 12831487. The next prime is 12831491. The reversal of 12831489 is 98413821.

It is an interprime number because it is at equal distance from previous prime (12831487) and next prime (12831491).

It is not a de Polignac number, because 12831489 - 2¹ = 12831487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12831487) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 113497 + ... + 113609.

It is an arithmetic number, because the mean of its divisors is an integer number (450528).

Almost surely, 2^12831489 is an apocalyptic number.

It is an amenable number.

12831489 is a deficient number, since it is larger than the sum of its proper divisors (8793855).

12831489 is a wasteful number, since it uses less digits than its factorization.

12831489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 195 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 12831489 is about 3582.1067823280. The cubic root of 12831489 is about 234.1130836282.

It can be divided in two parts, 1283 and 1489, that added together give a palindrome (2772).

The spelling of 12831489 in words is "twelve million, eight hundred thirty-one thousand, four hundred eighty-nine".