231201133001 has 2 divisors, whose sum is σ = 231201133002. Its totient is φ = 231201133000.

The previous prime is 231201132973. The next prime is 231201133003. The reversal of 231201133001 is 100331102132.

231201133001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168858533776 + 62342599225 = 410924^2 + 249685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231201133001 is a prime.

Together with 231201133003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231201133003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115600566500 + 115600566501.

It is an arithmetic number, because the mean of its divisors is an integer number (115600566501).

Almost surely, 2^231201133001 is an apocalyptic number.

It is an amenable number.

231201133001 is a deficient number, since it is larger than the sum of its proper divisors (1).

231201133001 is an equidigital number, since it uses as much as digits as its factorization.

231201133001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 231201133001 its reverse (100331102132), we get a palindrome (331532235133).

The spelling of 231201133001 in words is "two hundred thirty-one billion, two hundred one million, one hundred thirty-three thousand, one".