231231213320201 has 2 divisors, whose sum is σ = 231231213320202. Its totient is φ = 231231213320200.

The previous prime is 231231213320179. The next prime is 231231213320231. The reversal of 231231213320201 is 102023312132132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158857060030201 + 72374153290000 = 12603851^2 + 8507300^2 .

It is a cyclic number.

It is not a de Polignac number, because 231231213320201 - 2²⁶ = 231231146211337 is a prime.

It is not a weakly prime, because it can be changed into another prime (231231213320231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115615606660100 + 115615606660101.

It is an arithmetic number, because the mean of its divisors is an integer number (115615606660101).

Almost surely, 2^{231231213320201} is an apocalyptic number.

It is an amenable number.

231231213320201 is a deficient number, since it is larger than the sum of its proper divisors (1).

231231213320201 is an equidigital number, since it uses as much as digits as its factorization.

231231213320201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 231231213320201 its reverse (102023312132132), we get a palindrome (333254525452333).

The spelling of 231231213320201 in words is "two hundred thirty-one trillion, two hundred thirty-one billion, two hundred thirteen million, three hundred twenty thousand, two hundred one".