30231131212213 has 2 divisors, whose sum is σ = 30231131212214. Its totient is φ = 30231131212212.

The previous prime is 30231131212211. The next prime is 30231131212231. The reversal of 30231131212213 is 31221213113203.

Together with next prime (30231131212231) 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., 29076230648644 + 1154900563569 = 5392238^2 + 1074663^2 .

It is an emirp because it is prime and its reverse (31221213113203) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30231131212213 - 2¹ = 30231131212211 is a prime.

Together with 30231131212211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30231131212211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15115565606106 + 15115565606107.

It is an arithmetic number, because the mean of its divisors is an integer number (15115565606107).

Almost surely, 2^{30231131212213} is an apocalyptic number.

It is an amenable number.

30231131212213 is a deficient number, since it is larger than the sum of its proper divisors (1).

30231131212213 is an equidigital number, since it uses as much as digits as its factorization.

30231131212213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 30231131212213 its reverse (31221213113203), we get a palindrome (61452344325416).

The spelling of 30231131212213 in words is "thirty trillion, two hundred thirty-one billion, one hundred thirty-one million, two hundred twelve thousand, two hundred thirteen".