243016340 has 24 divisors (see below), whose sum is σ = 583239552. Its totient is φ = 83319840.

The previous prime is 243016337. The next prime is 243016351. The reversal of 243016340 is 43610342.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 867776 + ... + 868055.

It is an arithmetic number, because the mean of its divisors is an integer number (24301648).

Almost surely, 2^243016340 is an apocalyptic number.

243016340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243016340 is an abundant number, since it is smaller than the sum of its proper divisors (340223212).

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

243016340 is a wasteful number, since it uses less digits than its factorization.

243016340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735847 (or 1735845 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 243016340 is about 15588.9813650540. The cubic root of 243016340 is about 624.0391336678.

Adding to 243016340 its reverse (43610342), we get a palindrome (286626682).

The spelling of 243016340 in words is "two hundred forty-three million, sixteen thousand, three hundred forty".