161002303 has 16 divisors (see below), whose sum is σ = 203486976. Its totient is φ = 123733440.

The previous prime is 161002297. The next prime is 161002319. The reversal of 161002303 is 303200161.

It is a cyclic number.

It is not a de Polignac number, because 161002303 - 2⁵ = 161002271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161002103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8701 + ... + 19942.

It is an arithmetic number, because the mean of its divisors is an integer number (12717936).

Almost surely, 2^161002303 is an apocalyptic number.

161002303 is a deficient number, since it is larger than the sum of its proper divisors (42484673).

161002303 is a wasteful number, since it uses less digits than its factorization.

161002303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28734.

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

The square root of 161002303 is about 12688.6682910383. The cubic root of 161002303 is about 544.0147764423.

Adding to 161002303 its reverse (303200161), we get a palindrome (464202464).

The spelling of 161002303 in words is "one hundred sixty-one million, two thousand, three hundred three".