163969231 has 8 divisors (see below), whose sum is σ = 171239904. Its totient is φ = 156710400.

The previous prime is 163969217. The next prime is 163969243. The reversal of 163969231 is 132969361.

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

It is a cyclic number.

It is not a de Polignac number, because 163969231 - 2¹¹ = 163967183 is a prime.

It is a super-2 number, since 2×163969231² = 53771817429462722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163969331) 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, 36931 + ... + 41131.

It is an arithmetic number, because the mean of its divisors is an integer number (21404988).

Almost surely, 2^163969231 is an apocalyptic number.

163969231 is a deficient number, since it is larger than the sum of its proper divisors (7270673).

163969231 is a wasteful number, since it uses less digits than its factorization.

163969231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5921.

The product of its digits is 52488, while the sum is 40.

The square root of 163969231 is about 12805.0470908935. The cubic root of 163969231 is about 547.3361335526.

The spelling of 163969231 in words is "one hundred sixty-three million, nine hundred sixty-nine thousand, two hundred thirty-one".