2161303 has 2 divisors, whose sum is σ = 2161304. Its totient is φ = 2161302.

The previous prime is 2161301. The next prime is 2161319. The reversal of 2161303 is 3031612.

It is an a-pointer prime, because the next prime (2161319) can be obtained adding 2161303 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2161303 - 2¹ = 2161301 is a prime.

Together with 2161301, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2161301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080651 + 1080652.

It is an arithmetic number, because the mean of its divisors is an integer number (1080652).

2^2161303 is an apocalyptic number.

2161303 is a deficient number, since it is larger than the sum of its proper divisors (1).

2161303 is an equidigital number, since it uses as much as digits as its factorization.

2161303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 2161303 is about 1470.1370684395. The cubic root of 2161303 is about 129.2920690326.

Adding to 2161303 its reverse (3031612), we get a palindrome (5192915).

The spelling of 2161303 in words is "two million, one hundred sixty-one thousand, three hundred three".