1681303 has 8 divisors (see below), whose sum is σ = 1821008. Its totient is φ = 1543104.

The previous prime is 1681289. The next prime is 1681307. The reversal of 1681303 is 3031861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1681303 - 2⁵ = 1681271 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 (1681307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3451 + ... + 3907.

It is an arithmetic number, because the mean of its divisors is an integer number (227626).

2^1681303 is an apocalyptic number.

1681303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1681303 is a deficient number, since it is larger than the sum of its proper divisors (139705).

1681303 is a wasteful number, since it uses less digits than its factorization.

1681303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1681303 is about 1296.6506854199. The cubic root of 1681303 is about 118.9091649634.

The spelling of 1681303 in words is "one million, six hundred eighty-one thousand, three hundred three".