243141305 has 8 divisors (see below), whose sum is σ = 318294144. Its totient is φ = 176830000.

The previous prime is 243141287. The next prime is 243141317. The reversal of 243141305 is 503141342.

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

It is a de Polignac number, because none of the positive numbers 2^k-243141305 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2210321 + ... + 2210430.

It is an arithmetic number, because the mean of its divisors is an integer number (39786768).

Almost surely, 2^243141305 is an apocalyptic number.

It is an amenable number.

243141305 is a deficient number, since it is larger than the sum of its proper divisors (75152839).

243141305 is a wasteful number, since it uses less digits than its factorization.

243141305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4420767.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 243141305 is about 15592.9889694054. The cubic root of 243141305 is about 624.1460807798.

Adding to 243141305 its reverse (503141342), we get a palindrome (746282647).

The spelling of 243141305 in words is "two hundred forty-three million, one hundred forty-one thousand, three hundred five".