231311102201 has 2 divisors, whose sum is σ = 231311102202. Its totient is φ = 231311102200.

The previous prime is 231311102173. The next prime is 231311102219. The reversal of 231311102201 is 102201113132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206315808400 + 24995293801 = 454220^2 + 158099^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231311102201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231311102201.

It is not a weakly prime, because it can be changed into another prime (231311102801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115655551100 + 115655551101.

It is an arithmetic number, because the mean of its divisors is an integer number (115655551101).

Almost surely, 2^231311102201 is an apocalyptic number.

It is an amenable number.

231311102201 is a deficient number, since it is larger than the sum of its proper divisors (1).

231311102201 is an equidigital number, since it uses as much as digits as its factorization.

231311102201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 231311102201 its reverse (102201113132), we get a palindrome (333512215333).

The spelling of 231311102201 in words is "two hundred thirty-one billion, three hundred eleven million, one hundred two thousand, two hundred one".