243052153531 has 4 divisors (see below), whose sum is σ = 265147803864. Its totient is φ = 220956503200.

The previous prime is 243052153529. The next prime is 243052153537. The reversal of 243052153531 is 135351250342.

243052153531 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 243052153531 - 2¹ = 243052153529 is a prime.

It is a super-2 number, since 2×243052153531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243052153537) 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, 11047825150 + ... + 11047825171.

It is an arithmetic number, because the mean of its divisors is an integer number (66286950966).

Almost surely, 2^243052153531 is an apocalyptic number.

243052153531 is a deficient number, since it is larger than the sum of its proper divisors (22095650333).

243052153531 is a wasteful number, since it uses less digits than its factorization.

243052153531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22095650332.

The product of its (nonzero) digits is 54000, while the sum is 34.

The spelling of 243052153531 in words is "two hundred forty-three billion, fifty-two million, one hundred fifty-three thousand, five hundred thirty-one".