231330331122313 has 2 divisors, whose sum is σ = 231330331122314. Its totient is φ = 231330331122312.

The previous prime is 231330331122287. The next prime is 231330331122323. The reversal of 231330331122313 is 313221133033132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231168092949369 + 162238172944 = 15204213^2 + 402788^2 .

It is a cyclic number.

It is not a de Polignac number, because 231330331122313 - 2⁹ = 231330331121801 is a prime.

It is not a weakly prime, because it can be changed into another prime (231330331122323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115665165561156 + 115665165561157.

It is an arithmetic number, because the mean of its divisors is an integer number (115665165561157).

Almost surely, 2^{231330331122313} is an apocalyptic number.

It is an amenable number.

231330331122313 is a deficient number, since it is larger than the sum of its proper divisors (1).

231330331122313 is an equidigital number, since it uses as much as digits as its factorization.

231330331122313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 31.

Adding to 231330331122313 its reverse (313221133033132), we get a palindrome (544551464155445).

The spelling of 231330331122313 in words is "two hundred thirty-one trillion, three hundred thirty billion, three hundred thirty-one million, one hundred twenty-two thousand, three hundred thirteen".