243313997063 has 4 divisors (see below), whose sum is σ = 243465974928. Its totient is φ = 243162019200.

The previous prime is 243313997057. The next prime is 243313997081. The reversal of 243313997063 is 360799313342.

243313997063 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243313997063 - 2³⁶ = 174594520327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243313997863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75986531 + ... + 75989732.

It is an arithmetic number, because the mean of its divisors is an integer number (60866493732).

Almost surely, 2^243313997063 is an apocalyptic number.

243313997063 is a deficient number, since it is larger than the sum of its proper divisors (151977865).

243313997063 is a wasteful number, since it uses less digits than its factorization.

243313997063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151977864.

The product of its (nonzero) digits is 2204496, while the sum is 50.

The spelling of 243313997063 in words is "two hundred forty-three billion, three hundred thirteen million, nine hundred ninety-seven thousand, sixty-three".