243144379 has 2 divisors, whose sum is σ = 243144380. Its totient is φ = 243144378.

The previous prime is 243144313. The next prime is 243144401. The reversal of 243144379 is 973441342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243144379 - 2⁹ = 243143867 is a prime.

It is not a weakly prime, because it can be changed into another prime (243144179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121572189 + 121572190.

It is an arithmetic number, because the mean of its divisors is an integer number (121572190).

Almost surely, 2^243144379 is an apocalyptic number.

243144379 is a deficient number, since it is larger than the sum of its proper divisors (1).

243144379 is an equidigital number, since it uses as much as digits as its factorization.

243144379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 37.

The square root of 243144379 is about 15593.0875390347. The cubic root of 243144379 is about 624.1487110980.

The spelling of 243144379 in words is "two hundred forty-three million, one hundred forty-four thousand, three hundred seventy-nine".