1431343 has 4 divisors (see below), whose sum is σ = 1433848. Its totient is φ = 1428840.

The previous prime is 1431337. The next prime is 1431347. The reversal of 1431343 is 3431341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3431341 = 811 ⋅4231.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1431343 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1431343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73 + ... + 1693.

It is an arithmetic number, because the mean of its divisors is an integer number (358462).

2^1431343 is an apocalyptic number.

1431343 is a deficient number, since it is larger than the sum of its proper divisors (2505).

1431343 is an equidigital number, since it uses as much as digits as its factorization.

1431343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2504.

The product of its digits is 432, while the sum is 19.

The square root of 1431343 is about 1196.3874790385. The cubic root of 1431343 is about 112.6975754435.

Adding to 1431343 its reverse (3431341), we get a palindrome (4862684).

The spelling of 1431343 in words is "one million, four hundred thirty-one thousand, three hundred forty-three".