163316401 has 8 divisors (see below), whose sum is σ = 170961408. Its totient is φ = 155820000.

The previous prime is 163316389. The next prime is 163316431. The reversal of 163316401 is 104613361.

It is a happy number.

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 163316401 - 2⁵ = 163316369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163316431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34900 + ... + 39301.

It is an arithmetic number, because the mean of its divisors is an integer number (21370176).

Almost surely, 2^163316401 is an apocalyptic number.

It is an amenable number.

163316401 is a deficient number, since it is larger than the sum of its proper divisors (7645007).

163316401 is an equidigital number, since it uses as much as digits as its factorization.

163316401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74303.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 163316401 is about 12779.5305469332. The cubic root of 163316401 is about 546.6087761340.

Adding to 163316401 its reverse (104613361), we get a palindrome (267929762).

The spelling of 163316401 in words is "one hundred sixty-three million, three hundred sixteen thousand, four hundred one".