243034143501 has 4 divisors (see below), whose sum is σ = 324045524672. Its totient is φ = 162022762332.

The previous prime is 243034143487. The next prime is 243034143557. The reversal of 243034143501 is 105341430342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 243034143501 - 2¹⁸ = 243033881357 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 (243034143301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40505690581 + ... + 40505690586.

It is an arithmetic number, because the mean of its divisors is an integer number (81011381168).

Almost surely, 2^243034143501 is an apocalyptic number.

It is an amenable number.

243034143501 is a deficient number, since it is larger than the sum of its proper divisors (81011381171).

243034143501 is an equidigital number, since it uses as much as digits as its factorization.

243034143501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81011381170.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 243034143501 its reverse (105341430342), we get a palindrome (348375573843).

The spelling of 243034143501 in words is "two hundred forty-three billion, thirty-four million, one hundred forty-three thousand, five hundred one".