161304243 has 8 divisors (see below), whose sum is σ = 226392000. Its totient is φ = 101876328.

The previous prime is 161304233. The next prime is 161304259. The reversal of 161304243 is 342403161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161304243 - 2¹⁷ = 161173171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161304233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1414893 + ... + 1415006.

It is an arithmetic number, because the mean of its divisors is an integer number (28299000).

Almost surely, 2^161304243 is an apocalyptic number.

161304243 is a deficient number, since it is larger than the sum of its proper divisors (65087757).

161304243 is a wasteful number, since it uses less digits than its factorization.

161304243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2829921.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 161304243 is about 12700.5607356526. The cubic root of 161304243 is about 544.3546416541.

The spelling of 161304243 in words is "one hundred sixty-one million, three hundred four thousand, two hundred forty-three".