163116331 has 8 divisors (see below), whose sum is σ = 188665344. Its totient is φ = 138129000.

The previous prime is 163116319. The next prime is 163116341. The reversal of 163116331 is 133611361.

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 163116331 - 2⁹ = 163115819 is a prime.

It is a super-2 number, since 2×163116331² = 53213874877803122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 163116296 and 163116305.

It is not an unprimeable number, because it can be changed into a prime (163116341) 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, 139795 + ... + 140956.

It is an arithmetic number, because the mean of its divisors is an integer number (23583168).

Almost surely, 2^163116331 is an apocalyptic number.

163116331 is a deficient number, since it is larger than the sum of its proper divisors (25549013).

163116331 is an equidigital number, since it uses as much as digits as its factorization.

163116331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280841.

The product of its digits is 972, while the sum is 25.

The square root of 163116331 is about 12771.7003957970. The cubic root of 163116331 is about 546.3854780766.

Adding to 163116331 its reverse (133611361), we get a palindrome (296727692).

The spelling of 163116331 in words is "one hundred sixty-three million, one hundred sixteen thousand, three hundred thirty-one".