231311323201 has 6 divisors (see below), whose sum is σ = 269076437250. Its totient is φ = 198266848416.

The previous prime is 231311323181. The next prime is 231311323247. The reversal of 231311323201 is 102323113132.

231311323201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 214532006976 + 16779316225 = 463176^2 + 129535^2 .

It is not a de Polignac number, because 231311323201 - 2⁹ = 231311322689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231311323261) 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 in 5 ways as a sum of consecutive naturals, for example, 2360319576 + ... + 2360319673.

It is an arithmetic number, because the mean of its divisors is an integer number (44846072875).

Almost surely, 2^231311323201 is an apocalyptic number.

It is an amenable number.

231311323201 is a deficient number, since it is larger than the sum of its proper divisors (37765114049).

231311323201 is an equidigital number, since it uses as much as digits as its factorization.

231311323201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4720639263 (or 4720639256 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 231311323201 its reverse (102323113132), we get a palindrome (333634436333).

The spelling of 231311323201 in words is "two hundred thirty-one billion, three hundred eleven million, three hundred twenty-three thousand, two hundred one".