243412019 has 8 divisors (see below), whose sum is σ = 245887488. Its totient is φ = 240949000.

The previous prime is 243412009. The next prime is 243412027. The reversal of 243412019 is 910214342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243412019 is a prime.

It is a super-2 number, since 2×243412019² = 118498821987312722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243412009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39014 + ... + 44820.

It is an arithmetic number, because the mean of its divisors is an integer number (30735936).

Almost surely, 2^243412019 is an apocalyptic number.

243412019 is a deficient number, since it is larger than the sum of its proper divisors (2475469).

243412019 is a wasteful number, since it uses less digits than its factorization.

243412019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6225.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 243412019 is about 15601.6671865541. The cubic root of 243412019 is about 624.3776366813.

The spelling of 243412019 in words is "two hundred forty-three million, four hundred twelve thousand, nineteen".