163530331 has 8 divisors (see below), whose sum is σ = 165204000. Its totient is φ = 161864640.

The previous prime is 163530277. The next prime is 163530371. The reversal of 163530331 is 133035361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163530331 is a prime.

It is a super-4 number, since 4×163530331⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163530296 and 163530305.

It is not an unprimeable number, because it can be changed into a prime (163530371) 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 7 ways as a sum of consecutive naturals, for example, 44575 + ... + 48103.

It is an arithmetic number, because the mean of its divisors is an integer number (20650500).

Almost surely, 2^163530331 is an apocalyptic number.

163530331 is a deficient number, since it is larger than the sum of its proper divisors (1673669).

163530331 is a wasteful number, since it uses less digits than its factorization.

163530331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989.

The product of its (nonzero) digits is 2430, while the sum is 25.

The square root of 163530331 is about 12787.8978334987. The cubic root of 163530331 is about 546.8473416695.

Adding to 163530331 its reverse (133035361), we get a palindrome (296565692).

The spelling of 163530331 in words is "one hundred sixty-three million, five hundred thirty thousand, three hundred thirty-one".