1231447 has 16 divisors (see below), whose sum is σ = 1520640. Its totient is φ = 973728.

The previous prime is 1231423. The next prime is 1231453. The reversal of 1231447 is 7441321.

It is not a de Polignac number, because 1231447 - 2⁷ = 1231319 is a prime.

It is a Duffinian number.

1231447 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231457) 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 in 15 ways as a sum of consecutive naturals, for example, 6153 + ... + 6349.

It is an arithmetic number, because the mean of its divisors is an integer number (95040).

2^1231447 is an apocalyptic number.

1231447 is a deficient number, since it is larger than the sum of its proper divisors (289193).

1231447 is a wasteful number, since it uses less digits than its factorization.

1231447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270.

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

The square root of 1231447 is about 1109.7058168722. The cubic root of 1231447 is about 107.1861261005.

Adding to 1231447 its reverse (7441321), we get a palindrome (8672768).

The spelling of 1231447 in words is "one million, two hundred thirty-one thousand, four hundred forty-seven".