243113419 has 2 divisors, whose sum is σ = 243113420. Its totient is φ = 243113418.

The previous prime is 243113411. The next prime is 243113441. The reversal of 243113419 is 914311342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243113419 - 2³ = 243113411 is a prime.

It is a super-2 number, since 2×243113419² = 118208268995739122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (243113411) 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, 121556709 + 121556710.

It is an arithmetic number, because the mean of its divisors is an integer number (121556710).

Almost surely, 2^243113419 is an apocalyptic number.

243113419 is a deficient number, since it is larger than the sum of its proper divisors (1).

243113419 is an equidigital number, since it uses as much as digits as its factorization.

243113419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 243113419 is about 15592.0947598455. The cubic root of 243113419 is about 624.1222186570.

It can be divided in two parts, 24311 and 3419, that added together give a triangular number (27730 = T₂₃₅).

The spelling of 243113419 in words is "two hundred forty-three million, one hundred thirteen thousand, four hundred nineteen".