1423431 has 12 divisors (see below), whose sum is σ = 2076360. Its totient is φ = 939600.

The previous prime is 1423417. The next prime is 1423439. The reversal of 1423431 is 1343241.

It is not a de Polignac number, because 1423431 - 2⁵ = 1423399 is a prime.

It is a super-2 number, since 2×1423431² = 4052311623522, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423439) 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 11 ways as a sum of consecutive naturals, for example, 256 + ... + 1706.

It is an arithmetic number, because the mean of its divisors is an integer number (173030).

2^1423431 is an apocalyptic number.

1423431 is a deficient number, since it is larger than the sum of its proper divisors (652929).

1423431 is a wasteful number, since it uses less digits than its factorization.

1423431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566 (or 1563 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 1423431 is about 1193.0762758516. The cubic root of 1423431 is about 112.4895397682.

Adding to 1423431 its reverse (1343241), we get a palindrome (2766672).

The spelling of 1423431 in words is "one million, four hundred twenty-three thousand, four hundred thirty-one".