243319340 has 24 divisors (see below), whose sum is σ = 557422992. Its totient is φ = 88479680.

The previous prime is 243319333. The next prime is 243319387. The reversal of 243319340 is 43913342.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552779 + ... + 553218.

It is an arithmetic number, because the mean of its divisors is an integer number (23225958).

Almost surely, 2^243319340 is an apocalyptic number.

243319340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243319340 is an abundant number, since it is smaller than the sum of its proper divisors (314103652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243319340 is a wasteful number, since it uses less digits than its factorization.

243319340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106017 (or 1106015 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 243319340 is about 15598.6967404332. The cubic root of 243319340 is about 624.2983828014.

The spelling of 243319340 in words is "two hundred forty-three million, three hundred nineteen thousand, three hundred forty".