243121240341 has 32 divisors (see below), whose sum is σ = 412030361600. Its totient is φ = 138792599280.

The previous prime is 243121240337. The next prime is 243121240379. The reversal of 243121240341 is 143042121342.

243121240341 is a `hidden beast` number, since 2 + 4 + 3 + 1 + 212 + 403 + 41 = 666.

It is not a de Polignac number, because 243121240341 - 2² = 243121240337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243121240331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 422665 + ... + 815406.

It is an arithmetic number, because the mean of its divisors is an integer number (12875948800).

Almost surely, 2^243121240341 is an apocalyptic number.

243121240341 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

243121240341 is a deficient number, since it is larger than the sum of its proper divisors (168909121259).

243121240341 is a wasteful number, since it uses less digits than its factorization.

243121240341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239126 (or 1239120 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 243121240341 its reverse (143042121342), we get a palindrome (386163361683).

The spelling of 243121240341 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty thousand, three hundred forty-one".