30551236111261 has 2 divisors, whose sum is σ = 30551236111262. Its totient is φ = 30551236111260.

The previous prime is 30551236111211. The next prime is 30551236111309. The reversal of 30551236111261 is 16211163215503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29467461419236 + 1083774692025 = 5428394^2 + 1041045^2 .

It is an emirp because it is prime and its reverse (16211163215503) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30551236111261 - 2²¹ = 30551234014109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30551236111261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30551236111211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15275618055630 + 15275618055631.

It is an arithmetic number, because the mean of its divisors is an integer number (15275618055631).

Almost surely, 2^{30551236111261} is an apocalyptic number.

It is an amenable number.

30551236111261 is a deficient number, since it is larger than the sum of its proper divisors (1).

30551236111261 is an equidigital number, since it uses as much as digits as its factorization.

30551236111261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 37.

Adding to 30551236111261 its reverse (16211163215503), we get a palindrome (46762399326764).

The spelling of 30551236111261 in words is "thirty trillion, five hundred fifty-one billion, two hundred thirty-six million, one hundred eleven thousand, two hundred sixty-one".