102310120261 has 2 divisors, whose sum is σ = 102310120262. Its totient is φ = 102310120260.

The previous prime is 102310120207. The next prime is 102310120321. The reversal of 102310120261 is 162021013201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96963732100 + 5346388161 = 311390^2 + 73119^2 .

It is an emirp because it is prime and its reverse (162021013201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102310120261 - 2¹¹ = 102310118213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102310120201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51155060130 + 51155060131.

It is an arithmetic number, because the mean of its divisors is an integer number (51155060131).

Almost surely, 2^102310120261 is an apocalyptic number.

It is an amenable number.

102310120261 is a deficient number, since it is larger than the sum of its proper divisors (1).

102310120261 is an equidigital number, since it uses as much as digits as its factorization.

102310120261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 102310120261 its reverse (162021013201), we get a palindrome (264331133462).

The spelling of 102310120261 in words is "one hundred two billion, three hundred ten million, one hundred twenty thousand, two hundred sixty-one".