2120231030317 has 2 divisors, whose sum is σ = 2120231030318. Its totient is φ = 2120231030316.

The previous prime is 2120231030311. The next prime is 2120231030371. The reversal of 2120231030317 is 7130301320212.

It is a happy number.

Together with next prime (2120231030371) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2117740920516 + 2490109801 = 1455246^2 + 49901^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120231030317 - 2⁷ = 2120231030189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120231030291 and 2120231030300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120231030311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060115515158 + 1060115515159.

It is an arithmetic number, because the mean of its divisors is an integer number (1060115515159).

Almost surely, 2^{2120231030317} is an apocalyptic number.

It is an amenable number.

2120231030317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120231030317 is an equidigital number, since it uses as much as digits as its factorization.

2120231030317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

Adding to 2120231030317 its reverse (7130301320212), we get a palindrome (9250532350529).

The spelling of 2120231030317 in words is "two trillion, one hundred twenty billion, two hundred thirty-one million, thirty thousand, three hundred seventeen".