243172963 has 8 divisors (see below), whose sum is σ = 279241920. Its totient is φ = 209431080.

The previous prime is 243172939. The next prime is 243172973. The reversal of 243172963 is 369271342.

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

It is a cyclic number.

It is not a de Polignac number, because 243172963 - 2⁵ = 243172931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243172903) 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, 581545 + ... + 581962.

It is an arithmetic number, because the mean of its divisors is an integer number (34905240).

Almost surely, 2^243172963 is an apocalyptic number.

243172963 is a deficient number, since it is larger than the sum of its proper divisors (36068957).

243172963 is a wasteful number, since it uses less digits than its factorization.

243172963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163537.

The product of its digits is 54432, while the sum is 37.

The square root of 243172963 is about 15594.0040720785. The cubic root of 243172963 is about 624.1731684016.

The spelling of 243172963 in words is "two hundred forty-three million, one hundred seventy-two thousand, nine hundred sixty-three".