243214340 has 12 divisors (see below), whose sum is σ = 510750156. Its totient is φ = 97285728.

The previous prime is 243214333. The next prime is 243214369. The reversal of 243214340 is 43412342.

It can be written as a sum of positive squares in 2 ways, for example, as 68128516 + 175085824 = 8254^2 + 13232^2 .

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 3 ways as a sum of consecutive naturals, for example, 6080339 + ... + 6080378.

It is an arithmetic number, because the mean of its divisors is an integer number (42562513).

Almost surely, 2^243214340 is an apocalyptic number.

243214340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243214340 is an abundant number, since it is smaller than the sum of its proper divisors (267535816).

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

243214340 is a wasteful number, since it uses less digits than its factorization.

243214340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12160726 (or 12160724 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 243214340 is about 15595.3307114662. The cubic root of 243214340 is about 624.2085683739.

Adding to 243214340 its reverse (43412342), we get a palindrome (286626682).

The spelling of 243214340 in words is "two hundred forty-three million, two hundred fourteen thousand, three hundred forty".