243114215105 has 4 divisors (see below), whose sum is σ = 291737058132. Its totient is φ = 194491372080.

The previous prime is 243114215101. The next prime is 243114215117. The reversal of 243114215105 is 501512411342.

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 47361946384 + 195752268721 = 217628^2 + 442439^2 .

It is not a de Polignac number, because 243114215105 - 2² = 243114215101 is a prime.

It is a super-2 number, since 2×243114215105² (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 (243114215101) 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, 24311421506 + ... + 24311421515.

It is an arithmetic number, because the mean of its divisors is an integer number (72934264533).

Almost surely, 2^243114215105 is an apocalyptic number.

It is an amenable number.

243114215105 is a deficient number, since it is larger than the sum of its proper divisors (48622843027).

243114215105 is an equidigital number, since it uses as much as digits as its factorization.

243114215105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48622843026.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 243114215105 its reverse (501512411342), we get a palindrome (744626626447).

The spelling of 243114215105 in words is "two hundred forty-three billion, one hundred fourteen million, two hundred fifteen thousand, one hundred five".