243423021244 has 24 divisors (see below), whose sum is σ = 473557443968. Its totient is φ = 108724921920.

The previous prime is 243423021211. The next prime is 243423021263. The reversal of 243423021244 is 442120324342.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 75501807 + ... + 75505030.

Almost surely, 2^243423021244 is an apocalyptic number.

It is an amenable number.

243423021244 is a deficient number, since it is larger than the sum of its proper divisors (230134422724).

243423021244 is a wasteful number, since it uses less digits than its factorization.

243423021244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151006885 (or 151006883 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 243423021244 its reverse (442120324342), we get a palindrome (685543345586).

The spelling of 243423021244 in words is "two hundred forty-three billion, four hundred twenty-three million, twenty-one thousand, two hundred forty-four".