243235143045 has 24 divisors (see below), whose sum is σ = 433002383736. Its totient is φ = 126219316608.

The previous prime is 243235143031. The next prime is 243235143059. The reversal of 243235143045 is 540341532342.

243235143045 is a `hidden beast` number, since 24 + 323 + 5 + 1 + 4 + 304 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (243235143031) and next prime (243235143059).

It can be written as a sum of positive squares in 4 ways, for example, as 127068009156 + 116167133889 = 356466^2 + 340833^2 .

It is not a de Polignac number, because 243235143045 - 2⁶ = 243235142981 is a prime.

It is a super-2 number, since 2×243235143045² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73041922 + ... + 73045251.

It is an arithmetic number, because the mean of its divisors is an integer number (18041765989).

Almost surely, 2^243235143045 is an apocalyptic number.

It is an amenable number.

243235143045 is a deficient number, since it is larger than the sum of its proper divisors (189767240691).

243235143045 is a wasteful number, since it uses less digits than its factorization.

243235143045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146087221 (or 146087218 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 243235143045 its reverse (540341532342), we get a palindrome (783576675387).

The spelling of 243235143045 in words is "two hundred forty-three billion, two hundred thirty-five million, one hundred forty-three thousand, forty-five".