243201251141 has 4 divisors (see below), whose sum is σ = 243214486284. Its totient is φ = 243188016000.

The previous prime is 243201251129. The next prime is 243201251221. The reversal of 243201251141 is 141152102342.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 102557500516 + 140643750625 = 320246^2 + 375025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243201251141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243201251141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243201251641) 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, 6589970 + ... + 6626771.

It is an arithmetic number, because the mean of its divisors is an integer number (60803621571).

Almost surely, 2^243201251141 is an apocalyptic number.

It is an amenable number.

243201251141 is a deficient number, since it is larger than the sum of its proper divisors (13235143).

243201251141 is a wasteful number, since it uses less digits than its factorization.

243201251141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13235142.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 243201251141 its reverse (141152102342), we get a palindrome (384353353483).

The spelling of 243201251141 in words is "two hundred forty-three billion, two hundred one million, two hundred fifty-one thousand, one hundred forty-one".