161347 has 4 divisors (see below), whose sum is σ = 170856. Its totient is φ = 151840.

The previous prime is 161341. The next prime is 161363. The reversal of 161347 is 743161.

161347 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 161347 - 2³ = 161339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161341) 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, 4729 + ... + 4762.

It is an arithmetic number, because the mean of its divisors is an integer number (42714).

2¹⁶¹³⁴⁷ is an apocalyptic number.

161347 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

161347 is a deficient number, since it is larger than the sum of its proper divisors (9509).

161347 is an equidigital number, since it uses as much as digits as its factorization.

161347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9508.

The product of its digits is 504, while the sum is 22.

The square root of 161347 is about 401.6802210714. The cubic root of 161347 is about 54.4402734861.

The spelling of 161347 in words is "one hundred sixty-one thousand, three hundred forty-seven".