243232973 has 2 divisors, whose sum is σ = 243232974. Its totient is φ = 243232972.

The previous prime is 243232967. The next prime is 243233009. The reversal of 243232973 is 379232342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233417284 + 9815689 = 15278^2 + 3133^2 .

It is a cyclic number.

It is not a de Polignac number, because 243232973 - 2⁶ = 243232909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243232963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121616486 + 121616487.

It is an arithmetic number, because the mean of its divisors is an integer number (121616487).

Almost surely, 2^243232973 is an apocalyptic number.

It is an amenable number.

243232973 is a deficient number, since it is larger than the sum of its proper divisors (1).

243232973 is an equidigital number, since it uses as much as digits as its factorization.

243232973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 35.

The square root of 243232973 is about 15595.9280903703. The cubic root of 243232973 is about 624.2245084719.

The spelling of 243232973 in words is "two hundred forty-three million, two hundred thirty-two thousand, nine hundred seventy-three".