161303 has 2 divisors, whose sum is σ = 161304. Its totient is φ = 161302.

The previous prime is 161281. The next prime is 161309. The reversal of 161303 is 303161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161303 - 2⁸ = 161047 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80651 + 80652.

It is an arithmetic number, because the mean of its divisors is an integer number (80652).

2¹⁶¹³⁰³ is an apocalyptic number.

161303 is a deficient number, since it is larger than the sum of its proper divisors (1).

161303 is an equidigital number, since it uses as much as digits as its factorization.

161303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 161303 is about 401.6254474009. The cubic root of 161303 is about 54.4353243397.

Adding to 161303 its reverse (303161), we get a palindrome (464464).

It can be divided in two parts, 161 and 303, that added together give a palindrome (464).

The spelling of 161303 in words is "one hundred sixty-one thousand, three hundred three".