243073316 has 6 divisors (see below), whose sum is σ = 425378310. Its totient is φ = 121536656.

The previous prime is 243073309. The next prime is 243073393. The reversal of 243073316 is 613370342.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 238578916 + 4494400 = 15446^2 + 2120^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30384161 + ... + 30384168.

It is an arithmetic number, because the mean of its divisors is an integer number (70896385).

Almost surely, 2^243073316 is an apocalyptic number.

It is an amenable number.

243073316 is a deficient number, since it is larger than the sum of its proper divisors (182304994).

243073316 is a wasteful number, since it uses less digits than its factorization.

243073316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60768333 (or 60768331 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 29.

The square root of 243073316 is about 15590.8087025658. The cubic root of 243073316 is about 624.0878992163.

The spelling of 243073316 in words is "two hundred forty-three million, seventy-three thousand, three hundred sixteen".