243023040041 has 4 divisors (see below), whose sum is σ = 251403144900. Its totient is φ = 234642935184.

The previous prime is 243023040019. The next prime is 243023040047. The reversal of 243023040041 is 140040320342.

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 179466613225 + 63556426816 = 423635^2 + 252104^2 .

It is a de Polignac number, because none of the positive numbers 2^k-243023040041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243023039989 and 243023040016.

It is not an unprimeable number, because it can be changed into a prime (243023040047) 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, 4190052386 + ... + 4190052443.

It is an arithmetic number, because the mean of its divisors is an integer number (62850786225).

Almost surely, 2^243023040041 is an apocalyptic number.

It is an amenable number.

243023040041 is a deficient number, since it is larger than the sum of its proper divisors (8380104859).

243023040041 is an equidigital number, since it uses as much as digits as its factorization.

243023040041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8380104858.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 243023040041 its reverse (140040320342), we get a palindrome (383063360383).

The spelling of 243023040041 in words is "two hundred forty-three billion, twenty-three million, forty thousand, forty-one".