243115553311 has 8 divisors (see below), whose sum is σ = 248941387904. Its totient is φ = 237297536280.

The previous prime is 243115553299. The next prime is 243115553323. The reversal of 243115553311 is 113355511342.

It is an interprime number because it is at equal distance from previous prime (243115553299) and next prime (243115553323).

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 243115553311 - 2¹³ = 243115545119 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 (243115553711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1891425 + ... + 2015866.

It is an arithmetic number, because the mean of its divisors is an integer number (31117673488).

Almost surely, 2^243115553311 is an apocalyptic number.

243115553311 is a deficient number, since it is larger than the sum of its proper divisors (5825834593).

243115553311 is a wasteful number, since it uses less digits than its factorization.

243115553311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3908781.

The product of its digits is 27000, while the sum is 34.

The spelling of 243115553311 in words is "two hundred forty-three billion, one hundred fifteen million, five hundred fifty-three thousand, three hundred eleven".