168431207 has 4 divisors (see below), whose sum is σ = 192492816. Its totient is φ = 144369600.

The previous prime is 168431203. The next prime is 168431209. The reversal of 168431207 is 702134861.

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

It is a cyclic number.

It is not a de Polignac number, because 168431207 - 2² = 168431203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168431203) 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, 12030794 + ... + 12030807.

It is an arithmetic number, because the mean of its divisors is an integer number (48123204).

Almost surely, 2^168431207 is an apocalyptic number.

168431207 is a deficient number, since it is larger than the sum of its proper divisors (24061609).

168431207 is an equidigital number, since it uses as much as digits as its factorization.

168431207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24061608.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 168431207 is about 12978.1049078824. The cubic root of 168431207 is about 552.2565221902.

The spelling of 168431207 in words is "one hundred sixty-eight million, four hundred thirty-one thousand, two hundred seven".