243114451 has 2 divisors, whose sum is σ = 243114452. Its totient is φ = 243114450.

The previous prime is 243114427. The next prime is 243114479. The reversal of 243114451 is 154411342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243114451 - 2⁵ = 243114419 is a prime.

It is not a weakly prime, because it can be changed into another prime (243114491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121557225 + 121557226.

It is an arithmetic number, because the mean of its divisors is an integer number (121557226).

Almost surely, 2^243114451 is an apocalyptic number.

243114451 is a deficient number, since it is larger than the sum of its proper divisors (1).

243114451 is an equidigital number, since it uses as much as digits as its factorization.

243114451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 25.

The square root of 243114451 is about 15592.1278535035. The cubic root of 243114451 is about 624.1231017746.

Adding to 243114451 its reverse (154411342), we get a palindrome (397525793).

The spelling of 243114451 in words is "two hundred forty-three million, one hundred fourteen thousand, four hundred fifty-one".