163131031632 has 40 divisors (see below), whose sum is σ = 421575919200. Its totient is φ = 54357128320.

The previous prime is 163131031543. The next prime is 163131031643. The reversal of 163131031632 is 236130131361.

It is a super-2 number, since 2×163131031632² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 163131031632.

It is a congruent number.

It is an unprimeable number.

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, 488382 + ... + 751517.

It is an arithmetic number, because the mean of its divisors is an integer number (10539397980).

Almost surely, 2^163131031632 is an apocalyptic number.

163131031632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

163131031632 is an abundant number, since it is smaller than the sum of its proper divisors (258444887568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163131031632 is a wasteful number, since it uses less digits than its factorization.

163131031632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242651 (or 1242645 counting only the distinct ones).

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

Adding to 163131031632 its reverse (236130131361), we get a palindrome (399261162993).

The spelling of 163131031632 in words is "one hundred sixty-three billion, one hundred thirty-one million, thirty-one thousand, six hundred thirty-two".