243421113111 has 64 divisors (see below), whose sum is σ = 385669886976. Its totient is φ = 135048038400.

The previous prime is 243421113109. The next prime is 243421113113. The reversal of 243421113111 is 111311124342.

It is an interprime number because it is at equal distance from previous prime (243421113109) and next prime (243421113113).

It is not a de Polignac number, because 243421113111 - 2¹ = 243421113109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243421113113) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1642015 + ... + 1784111.

It is an arithmetic number, because the mean of its divisors is an integer number (6026091984).

Almost surely, 2^243421113111 is an apocalyptic number.

243421113111 is a deficient number, since it is larger than the sum of its proper divisors (142248773865).

243421113111 is a wasteful number, since it uses less digits than its factorization.

243421113111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142232.

The product of its digits is 576, while the sum is 24.

Adding to 243421113111 its reverse (111311124342), we get a palindrome (354732237453).

The spelling of 243421113111 in words is "two hundred forty-three billion, four hundred twenty-one million, one hundred thirteen thousand, one hundred eleven".