243040113601 has 2 divisors, whose sum is σ = 243040113602. Its totient is φ = 243040113600.

The previous prime is 243040113583. The next prime is 243040113619. The reversal of 243040113601 is 106311040342.

It is a balanced prime because it is at equal distance from previous prime (243040113583) and next prime (243040113619).

It can be written as a sum of positive squares in only one way, i.e., 240781583025 + 2258530576 = 490695^2 + 47524^2 .

It is a cyclic number.

It is not a de Polignac number, because 243040113601 - 2²¹ = 243038016449 is a prime.

It is not a weakly prime, because it can be changed into another prime (243040113671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121520056800 + 121520056801.

It is an arithmetic number, because the mean of its divisors is an integer number (121520056801).

Almost surely, 2^243040113601 is an apocalyptic number.

It is an amenable number.

243040113601 is a deficient number, since it is larger than the sum of its proper divisors (1).

243040113601 is an equidigital number, since it uses as much as digits as its factorization.

243040113601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 243040113601 its reverse (106311040342), we get a palindrome (349351153943).

The spelling of 243040113601 in words is "two hundred forty-three billion, forty million, one hundred thirteen thousand, six hundred one".