243132047 has 2 divisors, whose sum is σ = 243132048. Its totient is φ = 243132046.

The previous prime is 243132013. The next prime is 243132067. The reversal of 243132047 is 740231342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243132047 - 2¹⁶ = 243066511 is a prime.

It is a super-2 number, since 2×243132047² = 118226384556820418, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243132067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121566023 + 121566024.

It is an arithmetic number, because the mean of its divisors is an integer number (121566024).

Almost surely, 2^243132047 is an apocalyptic number.

243132047 is a deficient number, since it is larger than the sum of its proper divisors (1).

243132047 is an equidigital number, since it uses as much as digits as its factorization.

243132047 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 26.

The square root of 243132047 is about 15592.6921023921. The cubic root of 243132047 is about 624.1381588874.

Adding to 243132047 its reverse (740231342), we get a palindrome (983363389).

The spelling of 243132047 in words is "two hundred forty-three million, one hundred thirty-two thousand, forty-seven".