161371343 has 4 divisors (see below), whose sum is σ = 184424400. Its totient is φ = 138318288.

The previous prime is 161371333. The next prime is 161371403. The reversal of 161371343 is 343173161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 343173161 = 15773 ⋅21757.

It is a cyclic number.

It is not a de Polignac number, because 161371343 - 2⁶ = 161371279 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 (161371333) 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, 11526518 + ... + 11526531.

It is an arithmetic number, because the mean of its divisors is an integer number (46106100).

Almost surely, 2^161371343 is an apocalyptic number.

161371343 is a deficient number, since it is larger than the sum of its proper divisors (23053057).

161371343 is an equidigital number, since it uses as much as digits as its factorization.

161371343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23053056.

The product of its digits is 4536, while the sum is 29.

The square root of 161371343 is about 12703.2020766419. The cubic root of 161371343 is about 544.4301121484.

The spelling of 161371343 in words is "one hundred sixty-one million, three hundred seventy-one thousand, three hundred forty-three".