1288343 has 12 divisors (see below), whose sum is σ = 1531152. Its totient is φ = 1061280.

The previous prime is 1288337. The next prime is 1288349. The reversal of 1288343 is 3438821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1288337) and next prime (1288349).

It is not a de Polignac number, because 1288343 - 2¹⁸ = 1026199 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288349) 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, 19196 + ... + 19262.

It is an arithmetic number, because the mean of its divisors is an integer number (127596).

2^1288343 is an apocalyptic number.

1288343 is a deficient number, since it is larger than the sum of its proper divisors (242809).

1288343 is an frugal number, since it uses more digits than its factorization.

1288343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 115 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 1288343 is about 1135.0519811885. The cubic root of 1288343 is about 108.8120938384.

The spelling of 1288343 in words is "one million, two hundred eighty-eight thousand, three hundred forty-three".