231323201 has 2 divisors, whose sum is σ = 231323202. Its totient is φ = 231323200.

The previous prime is 231323177. The next prime is 231323219. The reversal of 231323201 is 102323132.

231323201 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., 231009601 + 313600 = 15199^2 + 560^2 .

It is a cyclic number.

It is not a de Polignac number, because 231323201 - 2⁶ = 231323137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231323201.

It is not a weakly prime, because it can be changed into another prime (231323231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115661600 + 115661601.

It is an arithmetic number, because the mean of its divisors is an integer number (115661601).

Almost surely, 2^231323201 is an apocalyptic number.

It is an amenable number.

231323201 is a deficient number, since it is larger than the sum of its proper divisors (1).

231323201 is an equidigital number, since it uses as much as digits as its factorization.

231323201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 231323201 is about 15209.3129693619. The cubic root of 231323201 is about 613.8652713971.

Adding to 231323201 its reverse (102323132), we get a palindrome (333646333).

The spelling of 231323201 in words is "two hundred thirty-one million, three hundred twenty-three thousand, two hundred one".