310030130021 has 2 divisors, whose sum is σ = 310030130022. Its totient is φ = 310030130020.

The previous prime is 310030130009. The next prime is 310030130029. The reversal of 310030130021 is 120031030013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 262456413025 + 47573716996 = 512305^2 + 218114^2 .

It is an emirp because it is prime and its reverse (120031030013) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 310030130021 - 2¹⁴ = 310030113637 is a prime.

It is a super-2 number, since 2×310030130021² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 310030129978 and 310030130005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (310030130029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155015065010 + 155015065011.

It is an arithmetic number, because the mean of its divisors is an integer number (155015065011).

Almost surely, 2^310030130021 is an apocalyptic number.

It is an amenable number.

310030130021 is a deficient number, since it is larger than the sum of its proper divisors (1).

310030130021 is an equidigital number, since it uses as much as digits as its factorization.

310030130021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 310030130021 its reverse (120031030013), we get a palindrome (430061160034).

The spelling of 310030130021 in words is "three hundred ten billion, thirty million, one hundred thirty thousand, twenty-one".