103130726581 has 2 divisors, whose sum is σ = 103130726582. Its totient is φ = 103130726580.

The previous prime is 103130726549. The next prime is 103130726597. The reversal of 103130726581 is 185627031301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100939644100 + 2191082481 = 317710^2 + 46809^2 .

It is a cyclic number.

It is not a de Polignac number, because 103130726581 - 2⁵ = 103130726549 is a prime.

It is a super-2 number, since 2×103130726581² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 103130726581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103133726581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51565363290 + 51565363291.

It is an arithmetic number, because the mean of its divisors is an integer number (51565363291).

Almost surely, 2^103130726581 is an apocalyptic number.

It is an amenable number.

103130726581 is a deficient number, since it is larger than the sum of its proper divisors (1).

103130726581 is an equidigital number, since it uses as much as digits as its factorization.

103130726581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

Adding to 103130726581 its reverse (185627031301), we get a palindrome (288757757882).

The spelling of 103130726581 in words is "one hundred three billion, one hundred thirty million, seven hundred twenty-six thousand, five hundred eighty-one".