2161703 has 8 divisors (see below), whose sum is σ = 2313360. Its totient is φ = 2012800.

The previous prime is 2161699. The next prime is 2161729. The reversal of 2161703 is 3071612.

It is a happy number.

2161703 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2161703 - 2² = 2161699 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161303) 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 7 ways as a sum of consecutive naturals, for example, 1088 + ... + 2346.

It is an arithmetic number, because the mean of its divisors is an integer number (289170).

2^2161703 is an apocalyptic number.

2161703 is a deficient number, since it is larger than the sum of its proper divisors (151657).

2161703 is a wasteful number, since it uses less digits than its factorization.

2161703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 2161703 is about 1470.2731038824. The cubic root of 2161703 is about 129.3000447209.

Subtracting 2161703 from its reverse (3071612), we obtain a palindrome (909909).

The spelling of 2161703 in words is "two million, one hundred sixty-one thousand, seven hundred three".