168055331 has 4 divisors (see below), whose sum is σ = 168585792. Its totient is φ = 167524872.

The previous prime is 168055291. The next prime is 168055333. The reversal of 168055331 is 133550861.

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 168055331 - 2⁶ = 168055267 is a prime.

It is a super-2 number, since 2×168055331² = 56485188555039122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168055333) 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, 264755 + ... + 265388.

It is an arithmetic number, because the mean of its divisors is an integer number (42146448).

Almost surely, 2^168055331 is an apocalyptic number.

168055331 is a deficient number, since it is larger than the sum of its proper divisors (530461).

168055331 is an equidigital number, since it uses as much as digits as its factorization.

168055331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530460.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 168055331 is about 12963.6156607638. The cubic root of 168055331 is about 551.8454056245.

The spelling of 168055331 in words is "one hundred sixty-eight million, fifty-five thousand, three hundred thirty-one".