30310120213 has 4 divisors (see below), whose sum is σ = 30322663020. Its totient is φ = 30297577408.

The previous prime is 30310120189. The next prime is 30310120219. The reversal of 30310120213 is 31202101303.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16063788049 + 14246332164 = 126743^2 + 119358^2 .

It is a cyclic number.

It is not a de Polignac number, because 30310120213 - 2⁹ = 30310119701 is a prime.

It is a super-3 number, since 3×30310120213³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30310120219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6267778 + ... + 6272611.

It is an arithmetic number, because the mean of its divisors is an integer number (7580665755).

Almost surely, 2^30310120213 is an apocalyptic number.

It is an amenable number.

30310120213 is a deficient number, since it is larger than the sum of its proper divisors (12542807).

30310120213 is a wasteful number, since it uses less digits than its factorization.

30310120213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12542806.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 30310120213 its reverse (31202101303), we get a palindrome (61512221516).

The spelling of 30310120213 in words is "thirty billion, three hundred ten million, one hundred twenty thousand, two hundred thirteen".