12831001 has 2 divisors, whose sum is σ = 12831002. Its totient is φ = 12831000.

The previous prime is 12830999. The next prime is 12831029. The reversal of 12831001 is 10013821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11909401 + 921600 = 3451^2 + 960^2 .

It is a cyclic number.

It is not a de Polignac number, because 12831001 - 2¹ = 12830999 is a prime.

Together with 12830999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12831701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6415500 + 6415501.

It is an arithmetic number, because the mean of its divisors is an integer number (6415501).

Almost surely, 2^12831001 is an apocalyptic number.

It is an amenable number.

12831001 is a deficient number, since it is larger than the sum of its proper divisors (1).

12831001 is an equidigital number, since it uses as much as digits as its factorization.

12831001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 12831001 is about 3582.0386653413. The cubic root of 12831001 is about 234.1101157047.

Adding to 12831001 its reverse (10013821), we get a palindrome (22844822).

The spelling of 12831001 in words is "twelve million, eight hundred thirty-one thousand, one".