243212231000 has 64 divisors (see below), whose sum is σ = 572065865280. Its totient is φ = 96780748800.

The previous prime is 243212230979. The next prime is 243212231023. The reversal of 243212231000 is 132212342.

It is a super-2 number, since 2×243212231000² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 15 ways as a sum of consecutive naturals, for example, 437084 + ... + 823083.

It is an arithmetic number, because the mean of its divisors is an integer number (8938529145).

Almost surely, 2^243212231000 is an apocalyptic number.

243212231000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243212231000 is an abundant number, since it is smaller than the sum of its proper divisors (328853634280).

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

243212231000 is a wasteful number, since it uses less digits than its factorization.

243212231000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260381 (or 1260367 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 243212231000 its reverse (132212342), we get a palindrome (243344443342).

The spelling of 243212231000 in words is "two hundred forty-three billion, two hundred twelve million, two hundred thirty-one thousand".