231330100217 has 2 divisors, whose sum is σ = 231330100218. Its totient is φ = 231330100216.

The previous prime is 231330100139. The next prime is 231330100231. The reversal of 231330100217 is 712001033132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156047910841 + 75282189376 = 395029^2 + 274376^2 .

It is a cyclic number.

It is not a de Polignac number, because 231330100217 - 2¹⁶ = 231330034681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231330100192 and 231330100201.

It is not a weakly prime, because it can be changed into another prime (231330100237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115665050108 + 115665050109.

It is an arithmetic number, because the mean of its divisors is an integer number (115665050109).

Almost surely, 2^231330100217 is an apocalyptic number.

It is an amenable number.

231330100217 is a deficient number, since it is larger than the sum of its proper divisors (1).

231330100217 is an equidigital number, since it uses as much as digits as its factorization.

231330100217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 23.

Adding to 231330100217 its reverse (712001033132), we get a palindrome (943331133349).

The spelling of 231330100217 in words is "two hundred thirty-one billion, three hundred thirty million, one hundred thousand, two hundred seventeen".