163316631 has 8 divisors (see below), whose sum is σ = 223640944. Its totient is φ = 105935040.

The previous prime is 163316611. The next prime is 163316683. The reversal of 163316631 is 136613361.

163316631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 163316631 - 2⁵ = 163316599 is a prime.

It is a super-2 number, since 2×163316631² = 53344643922380322, 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 (163316611) 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, 735550 + ... + 735771.

It is an arithmetic number, because the mean of its divisors is an integer number (27955118).

Almost surely, 2^163316631 is an apocalyptic number.

163316631 is a deficient number, since it is larger than the sum of its proper divisors (60324313).

163316631 is a wasteful number, since it uses less digits than its factorization.

163316631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471361.

The product of its digits is 5832, while the sum is 30.

The square root of 163316631 is about 12779.5395456957. The cubic root of 163316631 is about 546.6090327319.

Adding to 163316631 its reverse (136613361), we get a palindrome (299929992).

The spelling of 163316631 in words is "one hundred sixty-three million, three hundred sixteen thousand, six hundred thirty-one".