1681310 has 16 divisors (see below), whose sum is σ = 3186000. Its totient is φ = 637056.

The previous prime is 1681307. The next prime is 1681321. The reversal of 1681310 is 131861.

It is a super-2 number, since 2×1681310² = 5653606632200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 4235 + ... + 4614.

It is an arithmetic number, because the mean of its divisors is an integer number (199125).

2^1681310 is an apocalyptic number.

1681310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1681310 is a deficient number, since it is larger than the sum of its proper divisors (1504690).

1681310 is a wasteful number, since it uses less digits than its factorization.

1681310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8875.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1681310 is about 1296.6533846792. The cubic root of 1681310 is about 118.9093299868.

It can be divided in two parts, 1681 and 310, that added together give a palindrome (1991).

The spelling of 1681310 in words is "one million, six hundred eighty-one thousand, three hundred ten".