168305679431 has 8 divisors (see below), whose sum is σ = 168541082304. Its totient is φ = 168070439520.

The previous prime is 168305679419. The next prime is 168305679457. The reversal of 168305679431 is 134976503861.

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 168305679431 - 2²² = 168301485127 is a prime.

It is a super-2 number, since 2×168305679431² (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 (168305679401) 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, 2104466 + ... + 2182976.

It is an arithmetic number, because the mean of its divisors is an integer number (21067635288).

Almost surely, 2^168305679431 is an apocalyptic number.

168305679431 is a deficient number, since it is larger than the sum of its proper divisors (235402873).

168305679431 is a wasteful number, since it uses less digits than its factorization.

168305679431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81481.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 168305679431 in words is "one hundred sixty-eight billion, three hundred five million, six hundred seventy-nine thousand, four hundred thirty-one".