243311243043 has 48 divisors (see below), whose sum is σ = 382201497216. Its totient is φ = 136451105280.

The previous prime is 243311243039. The next prime is 243311243047. The reversal of 243311243043 is 340342113342.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (243311243039) and next prime (243311243047).

It is not a de Polignac number, because 243311243043 - 2² = 243311243039 is a prime.

It is a super-2 number, since 2×243311243043² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243311243043.

It is not an unprimeable number, because it can be changed into a prime (243311243047) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 274771 + ... + 749747.

It is an arithmetic number, because the mean of its divisors is an integer number (7962531192).

Almost surely, 2^243311243043 is an apocalyptic number.

243311243043 is a deficient number, since it is larger than the sum of its proper divisors (138890254173).

243311243043 is a wasteful number, since it uses less digits than its factorization.

243311243043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475072 (or 475053 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 243311243043 its reverse (340342113342), we get a palindrome (583653356385).

The spelling of 243311243043 in words is "two hundred forty-three billion, three hundred eleven million, two hundred forty-three thousand, forty-three".