243040113401 has 4 divisors (see below), whose sum is σ = 247625775972. Its totient is φ = 238454450832.

The previous prime is 243040113397. The next prime is 243040113427. The reversal of 243040113401 is 104311040342.

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 138209215225 + 104830898176 = 371765^2 + 323776^2 .

It is a cyclic number.

It is not a de Polignac number, because 243040113401 - 2² = 243040113397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243040113601) 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, 2292831206 + ... + 2292831311.

It is an arithmetic number, because the mean of its divisors is an integer number (61906443993).

Almost surely, 2^243040113401 is an apocalyptic number.

It is an amenable number.

243040113401 is a deficient number, since it is larger than the sum of its proper divisors (4585662571).

243040113401 is an equidigital number, since it uses as much as digits as its factorization.

243040113401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4585662570.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 243040113401 its reverse (104311040342), we get a palindrome (347351153743).

The spelling of 243040113401 in words is "two hundred forty-three billion, forty million, one hundred thirteen thousand, four hundred one".