1681123 has 8 divisors (see below), whose sum is σ = 1740816. Its totient is φ = 1622400.

The previous prime is 1681103. The next prime is 1681129. The reversal of 1681123 is 3211861.

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 1681123 - 2⁵ = 1681091 is a prime.

It is a super-2 number, since 2×1681123² = 5652349082258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1681094 and 1681103.

It is not an unprimeable number, because it can be changed into a prime (1681129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5215 + ... + 5527.

It is an arithmetic number, because the mean of its divisors is an integer number (217602).

2^1681123 is an apocalyptic number.

1681123 is a deficient number, since it is larger than the sum of its proper divisors (59693).

1681123 is a wasteful number, since it uses less digits than its factorization.

1681123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485.

The product of its digits is 288, while the sum is 22.

The square root of 1681123 is about 1296.5812739663. The cubic root of 1681123 is about 118.9049213473.

Adding to 1681123 its reverse (3211861), we get a palindrome (4892984).

The spelling of 1681123 in words is "one million, six hundred eighty-one thousand, one hundred twenty-three".