30213011261 has 2 divisors, whose sum is σ = 30213011262. Its totient is φ = 30213011260.

The previous prime is 30213011249. The next prime is 30213011369. The reversal of 30213011261 is 16211031203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29068204036 + 1144807225 = 170494^2 + 33835^2 .

It is an emirp because it is prime and its reverse (16211031203) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30213011261 - 2¹⁸ = 30212749117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30213011161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15106505630 + 15106505631.

It is an arithmetic number, because the mean of its divisors is an integer number (15106505631).

Almost surely, 2^30213011261 is an apocalyptic number.

It is an amenable number.

30213011261 is a deficient number, since it is larger than the sum of its proper divisors (1).

30213011261 is an equidigital number, since it uses as much as digits as its factorization.

30213011261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 30213011261 its reverse (16211031203), we get a palindrome (46424042464).

The spelling of 30213011261 in words is "thirty billion, two hundred thirteen million, eleven thousand, two hundred sixty-one".