1331343 has 16 divisors (see below), whose sum is σ = 2124640. Its totient is φ = 819072.

The previous prime is 1331339. The next prime is 1331347. The reversal of 1331343 is 3431331.

It is an interprime number because it is at equal distance from previous prime (1331339) and next prime (1331347).

It is not a de Polignac number, because 1331343 - 2² = 1331339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1546 + ... + 2247.

It is an arithmetic number, because the mean of its divisors is an integer number (132790).

2^1331343 is an apocalyptic number.

1331343 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1331343 is a deficient number, since it is larger than the sum of its proper divisors (793297).

1331343 is a wasteful number, since it uses less digits than its factorization.

1331343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3815 (or 3809 counting only the distinct ones).

The product of its digits is 324, while the sum is 18.

The square root of 1331343 is about 1153.8383768969. The cubic root of 1331343 is about 110.0094482243.

Adding to 1331343 its reverse (3431331), we get a palindrome (4762674).

It can be divided in two parts, 1331 and 343, that multiplied together give a cube (456533 = 77³).

The spelling of 1331343 in words is "one million, three hundred thirty-one thousand, three hundred forty-three".