243312325001 has 2 divisors, whose sum is σ = 243312325002. Its totient is φ = 243312325000.

The previous prime is 243312324973. The next prime is 243312325027. The reversal of 243312325001 is 100523213342.

It is a happy number.

It is an a-pointer prime, because the next prime (243312325027) can be obtained adding 243312325001 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161060952976 + 82251372025 = 401324^2 + 286795^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243312325001 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (243312325301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121656162500 + 121656162501.

It is an arithmetic number, because the mean of its divisors is an integer number (121656162501).

Almost surely, 2^243312325001 is an apocalyptic number.

It is an amenable number.

243312325001 is a deficient number, since it is larger than the sum of its proper divisors (1).

243312325001 is an equidigital number, since it uses as much as digits as its factorization.

243312325001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 243312325001 its reverse (100523213342), we get a palindrome (343835538343).

The spelling of 243312325001 in words is "two hundred forty-three billion, three hundred twelve million, three hundred twenty-five thousand, one".