168193131 has 8 divisors (see below), whose sum is σ = 225420240. Its totient is φ = 111547392.

The previous prime is 168193093. The next prime is 168193159. The reversal of 168193131 is 131391861.

It is a happy number.

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

It is not a de Polignac number, because 168193131 - 2²² = 163998827 is a prime.

It is a super-2 number, since 2×168193131² = 56577858631166322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 168193092 and 168193101.

It is not an unprimeable number, because it can be changed into a prime (168193171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144666 + ... + 145823.

It is an arithmetic number, because the mean of its divisors is an integer number (28177530).

Almost surely, 2^168193131 is an apocalyptic number.

168193131 is a deficient number, since it is larger than the sum of its proper divisors (57227109).

168193131 is a wasteful number, since it uses less digits than its factorization.

168193131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290685.

The product of its digits is 3888, while the sum is 33.

The square root of 168193131 is about 12968.9294469513. The cubic root of 168193131 is about 551.9961962823.

The spelling of 168193131 in words is "one hundred sixty-eight million, one hundred ninety-three thousand, one hundred thirty-one".