243031012 has 48 divisors (see below), whose sum is σ = 504548352. Its totient is φ = 100265760.

The previous prime is 243031007. The next prime is 243031037. The reversal of 243031012 is 210130342.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84063 + ... + 86905.

It is an arithmetic number, because the mean of its divisors is an integer number (10511424).

Almost surely, 2^243031012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243031012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252274176).

243031012 is an abundant number, since it is smaller than the sum of its proper divisors (261517340).

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

243031012 is a wasteful number, since it uses less digits than its factorization.

243031012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2968 (or 2966 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 243031012 is about 15589.4519467491. The cubic root of 243031012 is about 624.0516921071.

Adding to 243031012 its reverse (210130342), we get a palindrome (453161354).

The spelling of 243031012 in words is "two hundred forty-three million, thirty-one thousand, twelve".