240213236 has 6 divisors (see below), whose sum is σ = 420373170. Its totient is φ = 120106616.

The previous prime is 240213229. The next prime is 240213269. The reversal of 240213236 is 632312042.

240213236 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 189888400 + 50324836 = 13780^2 + 7094^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30026651 + ... + 30026658.

It is an arithmetic number, because the mean of its divisors is an integer number (70062195).

Almost surely, 2^240213236 is an apocalyptic number.

It is an amenable number.

240213236 is a deficient number, since it is larger than the sum of its proper divisors (180159934).

240213236 is a wasteful number, since it uses less digits than its factorization.

240213236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60053313 (or 60053311 counting only the distinct ones).

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

The square root of 240213236 is about 15498.8140191435. The cubic root of 240213236 is about 621.6304949960.

Adding to 240213236 its reverse (632312042), we get a palindrome (872525278).

The spelling of 240213236 in words is "two hundred forty million, two hundred thirteen thousand, two hundred thirty-six".