231313203201 has 4 divisors (see below), whose sum is σ = 308417604272. Its totient is φ = 154208802132.

The previous prime is 231313203197. The next prime is 231313203227. The reversal of 231313203201 is 102302313132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 231313203201 - 2² = 231313203197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231313203001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38552200531 + ... + 38552200536.

It is an arithmetic number, because the mean of its divisors is an integer number (77104401068).

Almost surely, 2^231313203201 is an apocalyptic number.

It is an amenable number.

231313203201 is a deficient number, since it is larger than the sum of its proper divisors (77104401071).

231313203201 is an equidigital number, since it uses as much as digits as its factorization.

231313203201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77104401070.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 231313203201 its reverse (102302313132), we get a palindrome (333615516333).

The spelling of 231313203201 in words is "two hundred thirty-one billion, three hundred thirteen million, two hundred three thousand, two hundred one".