161340339 has 4 divisors (see below), whose sum is σ = 215120456. Its totient is φ = 107560224.

The previous prime is 161340317. The next prime is 161340349. The reversal of 161340339 is 933043161.

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

It is not a de Polignac number, because 161340339 - 2⁵ = 161340307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161340349) 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, 26890054 + ... + 26890059.

It is an arithmetic number, because the mean of its divisors is an integer number (53780114).

Almost surely, 2^161340339 is an apocalyptic number.

161340339 is a deficient number, since it is larger than the sum of its proper divisors (53780117).

161340339 is an equidigital number, since it uses as much as digits as its factorization.

161340339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53780116.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 161340339 is about 12701.9816957827. The cubic root of 161340339 is about 544.3952431065.

The spelling of 161340339 in words is "one hundred sixty-one million, three hundred forty thousand, three hundred thirty-nine".