30312013213 has 2 divisors, whose sum is σ = 30312013214. Its totient is φ = 30312013212.

The previous prime is 30312013153. The next prime is 30312013231. The reversal of 30312013213 is 31231021303.

Together with next prime (30312013231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17713746649 + 12598266564 = 133093^2 + 112242^2 .

It is a cyclic number.

It is not a de Polignac number, because 30312013213 - 2²¹ = 30309916061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30312013313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15156006606 + 15156006607.

It is an arithmetic number, because the mean of its divisors is an integer number (15156006607).

Almost surely, 2^30312013213 is an apocalyptic number.

It is an amenable number.

30312013213 is a deficient number, since it is larger than the sum of its proper divisors (1).

30312013213 is an equidigital number, since it uses as much as digits as its factorization.

30312013213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 30312013213 its reverse (31231021303), we get a palindrome (61543034516).

The spelling of 30312013213 in words is "thirty billion, three hundred twelve million, thirteen thousand, two hundred thirteen".