163303013 has 4 divisors (see below), whose sum is σ = 170403168. Its totient is φ = 156202860.

The previous prime is 163302989. The next prime is 163303061. The reversal of 163303013 is 310303361.

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: 310303361 = 59 ⋅5259379.

It is a cyclic number.

It is not a de Polignac number, because 163303013 - 2¹⁰ = 163301989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163303073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3550043 + ... + 3550088.

It is an arithmetic number, because the mean of its divisors is an integer number (42600792).

Almost surely, 2^163303013 is an apocalyptic number.

It is an amenable number.

163303013 is a deficient number, since it is larger than the sum of its proper divisors (7100155).

163303013 is an equidigital number, since it uses as much as digits as its factorization.

163303013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7100154.

The product of its (nonzero) digits is 486, while the sum is 20.

The square root of 163303013 is about 12779.0067297893. The cubic root of 163303013 is about 546.5938394870.

Adding to 163303013 its reverse (310303361), we get a palindrome (473606374).

The spelling of 163303013 in words is "one hundred sixty-three million, three hundred three thousand, thirteen".