302161 has 4 divisors (see below), whose sum is σ = 309232. Its totient is φ = 295092.

The previous prime is 302143. The next prime is 302167. The reversal of 302161 is 161203.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 161203 = 7 ⋅23029.

It is a cyclic number.

It is not a de Polignac number, because 302161 - 2⁹ = 301649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (302167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3471 + ... + 3556.

It is an arithmetic number, because the mean of its divisors is an integer number (77308).

2³⁰²¹⁶¹ is an apocalyptic number.

It is an amenable number.

302161 is a deficient number, since it is larger than the sum of its proper divisors (7071).

302161 is an equidigital number, since it uses as much as digits as its factorization.

302161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7070.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 302161 is about 549.6917317916. The cubic root of 302161 is about 67.1036488843.

Adding to 302161 its reverse (161203), we get a palindrome (463364).

The spelling of 302161 in words is "three hundred two thousand, one hundred sixty-one".