243401232111 has 4 divisors (see below), whose sum is σ = 324534976152. Its totient is φ = 162267488072.

The previous prime is 243401232091. The next prime is 243401232121. The reversal of 243401232111 is 111232104342.

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

It is a cyclic number.

It is not a de Polignac number, because 243401232111 - 2⁹ = 243401231599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243401232121) 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, 40566872016 + ... + 40566872021.

It is an arithmetic number, because the mean of its divisors is an integer number (81133744038).

Almost surely, 2^243401232111 is an apocalyptic number.

243401232111 is a deficient number, since it is larger than the sum of its proper divisors (81133744041).

243401232111 is an equidigital number, since it uses as much as digits as its factorization.

243401232111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81133744040.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 243401232111 its reverse (111232104342), we get a palindrome (354633336453).

The spelling of 243401232111 in words is "two hundred forty-three billion, four hundred one million, two hundred thirty-two thousand, one hundred eleven".