231213323201 has 6 divisors (see below), whose sum is σ = 268962437250. Its totient is φ = 198182848416.

The previous prime is 231213323183. The next prime is 231213323213. The reversal of 231213323201 is 102323312132.

It can be written as a sum of positive squares in only one way, i.e., 229463992576 + 1749330625 = 479024^2 + 41825^2 .

It is not a de Polignac number, because 231213323201 - 2¹⁴ = 231213306817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231213323101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2359319576 + ... + 2359319673.

It is an arithmetic number, because the mean of its divisors is an integer number (44827072875).

Almost surely, 2^231213323201 is an apocalyptic number.

It is an amenable number.

231213323201 is a deficient number, since it is larger than the sum of its proper divisors (37749114049).

231213323201 is an equidigital number, since it uses as much as digits as its factorization.

231213323201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4718639263 (or 4718639256 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 231213323201 its reverse (102323312132), we get a palindrome (333536635333).

The spelling of 231213323201 in words is "two hundred thirty-one billion, two hundred thirteen million, three hundred twenty-three thousand, two hundred one".