243032047 has 2 divisors, whose sum is σ = 243032048. Its totient is φ = 243032046.

The previous prime is 243031979. The next prime is 243032057. The reversal of 243032047 is 740230342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243032047 - 2²³ = 234643439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243032057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121516023 + 121516024.

It is an arithmetic number, because the mean of its divisors is an integer number (121516024).

Almost surely, 2^243032047 is an apocalyptic number.

243032047 is a deficient number, since it is larger than the sum of its proper divisors (1).

243032047 is an equidigital number, since it uses as much as digits as its factorization.

243032047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 243032047 is about 15589.4851422361. The cubic root of 243032047 is about 624.0525779921.

Adding to 243032047 its reverse (740230342), we get a palindrome (983262389).

The spelling of 243032047 in words is "two hundred forty-three million, thirty-two thousand, forty-seven".