243111240145 has 8 divisors (see below), whose sum is σ = 308894281704. Its totient is φ = 183048463104.

The previous prime is 243111240101. The next prime is 243111240161. The reversal of 243111240145 is 541042111342.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3426580369 + 239684659776 = 58537^2 + 489576^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243111240145 - 2⁷ = 243111240017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1430066034 + ... + 1430066203.

It is an arithmetic number, because the mean of its divisors is an integer number (38611785213).

Almost surely, 2^243111240145 is an apocalyptic number.

It is an amenable number.

243111240145 is a deficient number, since it is larger than the sum of its proper divisors (65783041559).

243111240145 is a wasteful number, since it uses less digits than its factorization.

243111240145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2860132259.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 243111240145 its reverse (541042111342), we get a palindrome (784153351487).

The spelling of 243111240145 in words is "two hundred forty-three billion, one hundred eleven million, two hundred forty thousand, one hundred forty-five".