103251243517 has 2 divisors, whose sum is σ = 103251243518. Its totient is φ = 103251243516.

The previous prime is 103251243509. The next prime is 103251243541. The reversal of 103251243517 is 715342152301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60172580601 + 43078662916 = 245301^2 + 207554^2 .

It is a cyclic number.

It is not a de Polignac number, because 103251243517 - 2³ = 103251243509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103251243577) 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, 51625621758 + 51625621759.

It is an arithmetic number, because the mean of its divisors is an integer number (51625621759).

Almost surely, 2^103251243517 is an apocalyptic number.

It is an amenable number.

103251243517 is a deficient number, since it is larger than the sum of its proper divisors (1).

103251243517 is an equidigital number, since it uses as much as digits as its factorization.

103251243517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 34.

Adding to 103251243517 its reverse (715342152301), we get a palindrome (818593395818).

The spelling of 103251243517 in words is "one hundred three billion, two hundred fifty-one million, two hundred forty-three thousand, five hundred seventeen".