231201333001 has 2 divisors, whose sum is σ = 231201333002. Its totient is φ = 231201333000.

The previous prime is 231201332983. The next prime is 231201333029. The reversal of 231201333001 is 100333102132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126523201401 + 104678131600 = 355701^2 + 323540^2 .

It is a cyclic number.

It is not a de Polignac number, because 231201333001 - 2⁵ = 231201332969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231201333001.

It is not a weakly prime, because it can be changed into another prime (231201330001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115600666500 + 115600666501.

It is an arithmetic number, because the mean of its divisors is an integer number (115600666501).

Almost surely, 2^231201333001 is an apocalyptic number.

It is an amenable number.

231201333001 is a deficient number, since it is larger than the sum of its proper divisors (1).

231201333001 is an equidigital number, since it uses as much as digits as its factorization.

231201333001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 231201333001 its reverse (100333102132), we get a palindrome (331534435133).

The spelling of 231201333001 in words is "two hundred thirty-one billion, two hundred one million, three hundred thirty-three thousand, one".