243213200231220 has 120 divisors (see below), whose sum is σ = 765047752998144. Its totient is φ = 64680131565504.

The previous prime is 243213200231213. The next prime is 243213200231249. The reversal of 243213200231220 is 22132002312342.

243213200231220 is a `hidden beast` number, since 2 + 4 + 3 + 2 + 1 + 3 + 200 + 231 + 220 = 666.

It is a super-2 number, since 2×243213200231220² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 203944432 + ... + 205133511.

Almost surely, 2^{243213200231220} is an apocalyptic number.

243213200231220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243213200231220 is an abundant number, since it is smaller than the sum of its proper divisors (521834552766924).

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

243213200231220 is a wasteful number, since it uses less digits than its factorization.

243213200231220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409078331 (or 409078320 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 243213200231220 its reverse (22132002312342), we get a palindrome (265345202543562).

The spelling of 243213200231220 in words is "two hundred forty-three trillion, two hundred thirteen billion, two hundred million, two hundred thirty-one thousand, two hundred twenty".