2131447 has 2 divisors, whose sum is σ = 2131448. Its totient is φ = 2131446.

The previous prime is 2131429. The next prime is 2131457. The reversal of 2131447 is 7441312.

2131447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2131447 - 2⁷ = 2131319 is a prime.

It is a Chen prime.

2131447 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131417) 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, 1065723 + 1065724.

It is an arithmetic number, because the mean of its divisors is an integer number (1065724).

2^2131447 is an apocalyptic number.

2131447 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131447 is an equidigital number, since it uses as much as digits as its factorization.

2131447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 22.

The square root of 2131447 is about 1459.9476017995. The cubic root of 2131447 is about 128.6939643669.

Adding to 2131447 its reverse (7441312), we get a palindrome (9572759).

The spelling of 2131447 in words is "two million, one hundred thirty-one thousand, four hundred forty-seven".