243123303455 has 8 divisors (see below), whose sum is σ = 291848480352. Its totient is φ = 194431631968.

The previous prime is 243123303377. The next prime is 243123303469. The reversal of 243123303455 is 554303321342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243123303455 - 2¹⁰ = 243123302431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8360384 + ... + 8389413.

It is an arithmetic number, because the mean of its divisors is an integer number (36481060044).

Almost surely, 2^243123303455 is an apocalyptic number.

243123303455 is a deficient number, since it is larger than the sum of its proper divisors (48725176897).

243123303455 is a wasteful number, since it uses less digits than its factorization.

243123303455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16752705.

The product of its (nonzero) digits is 129600, while the sum is 35.

Adding to 243123303455 its reverse (554303321342), we get a palindrome (797426624797).

The spelling of 243123303455 in words is "two hundred forty-three billion, one hundred twenty-three million, three hundred three thousand, four hundred fifty-five".