243054319 has 2 divisors, whose sum is σ = 243054320. Its totient is φ = 243054318.

The previous prime is 243054311. The next prime is 243054337. The reversal of 243054319 is 913450342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243054319 - 2³ = 243054311 is a prime.

It is a super-2 number, since 2×243054319² = 118150803969107522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243054311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121527159 + 121527160.

It is an arithmetic number, because the mean of its divisors is an integer number (121527160).

Almost surely, 2^243054319 is an apocalyptic number.

243054319 is a deficient number, since it is larger than the sum of its proper divisors (1).

243054319 is an equidigital number, since it uses as much as digits as its factorization.

243054319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 243054319 is about 15590.1994535028. The cubic root of 243054319 is about 624.0716406009.

The spelling of 243054319 in words is "two hundred forty-three million, fifty-four thousand, three hundred nineteen".