243111322401 has 16 divisors (see below), whose sum is σ = 325005405504. Its totient is φ = 161646295104.

The previous prime is 243111322393. The next prime is 243111322411. The reversal of 243111322401 is 104223111342.

It is not a de Polignac number, because 243111322401 - 2³ = 243111322393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243111322411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1660375 + ... + 1800851.

It is an arithmetic number, because the mean of its divisors is an integer number (20312837844).

Almost surely, 2^243111322401 is an apocalyptic number.

It is an amenable number.

243111322401 is a deficient number, since it is larger than the sum of its proper divisors (81894083103).

243111322401 is a wasteful number, since it uses less digits than its factorization.

243111322401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142000.

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

Adding to 243111322401 its reverse (104223111342), we get a palindrome (347334433743).

The spelling of 243111322401 in words is "two hundred forty-three billion, one hundred eleven million, three hundred twenty-two thousand, four hundred one".