103135128361 has 2 divisors, whose sum is σ = 103135128362. Its totient is φ = 103135128360.

The previous prime is 103135128353. The next prime is 103135128401. The reversal of 103135128361 is 163821531301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51767625625 + 51367502736 = 227525^2 + 226644^2 .

It is an emirp because it is prime and its reverse (163821531301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103135128361 - 2³ = 103135128353 is a prime.

It is not a weakly prime, because it can be changed into another prime (103135128461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51567564180 + 51567564181.

It is an arithmetic number, because the mean of its divisors is an integer number (51567564181).

Almost surely, 2^103135128361 is an apocalyptic number.

It is an amenable number.

103135128361 is a deficient number, since it is larger than the sum of its proper divisors (1).

103135128361 is an equidigital number, since it uses as much as digits as its factorization.

103135128361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

Adding to 103135128361 its reverse (163821531301), we get a palindrome (266956659662).

The spelling of 103135128361 in words is "one hundred three billion, one hundred thirty-five million, one hundred twenty-eight thousand, three hundred sixty-one".