345727171 has 4 divisors (see below), whose sum is σ = 346119592. Its totient is φ = 345334752.

The previous prime is 345727163. The next prime is 345727177. The reversal of 345727171 is 171727543.

It is a happy number.

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 345727171 - 2³ = 345727163 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 345727171.

It is not an unprimeable number, because it can be changed into a prime (345727177) 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 3 ways as a sum of consecutive naturals, for example, 194886 + ... + 196651.

It is an arithmetic number, because the mean of its divisors is an integer number (86529898).

Almost surely, 2^345727171 is an apocalyptic number.

345727171 is a deficient number, since it is larger than the sum of its proper divisors (392421).

345727171 is an equidigital number, since it uses as much as digits as its factorization.

345727171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392420.

The product of its digits is 41160, while the sum is 37.

The square root of 345727171 is about 18593.7401025184. The cubic root of 345727171 is about 701.8503230644.

It can be divided in two parts, 3457 and 27171, that added together give a triangular number (30628 = T₂₄₇).

The spelling of 345727171 in words is "three hundred forty-five million, seven hundred twenty-seven thousand, one hundred seventy-one".