243040113427 has 2 divisors, whose sum is σ = 243040113428. Its totient is φ = 243040113426.

The previous prime is 243040113397. The next prime is 243040113467. The reversal of 243040113427 is 724311040342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243040113427 - 2⁷ = 243040113299 is a prime.

It is not a weakly prime, because it can be changed into another prime (243040113467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121520056713 + 121520056714.

It is an arithmetic number, because the mean of its divisors is an integer number (121520056714).

Almost surely, 2^243040113427 is an apocalyptic number.

243040113427 is a deficient number, since it is larger than the sum of its proper divisors (1).

243040113427 is an equidigital number, since it uses as much as digits as its factorization.

243040113427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 31.

Adding to 243040113427 its reverse (724311040342), we get a palindrome (967351153769).

The spelling of 243040113427 in words is "two hundred forty-three billion, forty million, one hundred thirteen thousand, four hundred twenty-seven".