163136101631 has 4 divisors (see below), whose sum is σ = 163203045432. Its totient is φ = 163069157832.

The previous prime is 163136101613. The next prime is 163136101679. The reversal of 163136101631 is 136101631361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163136101631 is a prime.

It is a super-2 number, since 2×163136101631² (a number of 23 digits) 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 (163136101691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33468245 + ... + 33473118.

It is an arithmetic number, because the mean of its divisors is an integer number (40800761358).

Almost surely, 2^163136101631 is an apocalyptic number.

163136101631 is a deficient number, since it is larger than the sum of its proper divisors (66943801).

163136101631 is an equidigital number, since it uses as much as digits as its factorization.

163136101631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66943800.

The product of its (nonzero) digits is 5832, while the sum is 32.

Adding to 163136101631 its reverse (136101631361), we get a palindrome (299237732992).

The spelling of 163136101631 in words is "one hundred sixty-three billion, one hundred thirty-six million, one hundred one thousand, six hundred thirty-one".