168312361 has 8 divisors (see below), whose sum is σ = 198562304. Its totient is φ = 139613760.

The previous prime is 168312349. The next prime is 168312401. The reversal of 168312361 is 163213861.

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 168312361 - 2⁵ = 168312329 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168312341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387600 + ... + 388033.

It is an arithmetic number, because the mean of its divisors is an integer number (24820288).

Almost surely, 2^168312361 is an apocalyptic number.

It is an amenable number.

168312361 is a deficient number, since it is larger than the sum of its proper divisors (30249943).

168312361 is an equidigital number, since it uses as much as digits as its factorization.

168312361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775671.

The product of its digits is 5184, while the sum is 31.

The square root of 168312361 is about 12973.5253882667. The cubic root of 168312361 is about 552.1265998656.

The spelling of 168312361 in words is "one hundred sixty-eight million, three hundred twelve thousand, three hundred sixty-one".