103123210513 has 2 divisors, whose sum is σ = 103123210514. Its totient is φ = 103123210512.

The previous prime is 103123210511. The next prime is 103123210559. The reversal of 103123210513 is 315012321301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101218149904 + 1905060609 = 318148^2 + 43647^2 .

It is a cyclic number.

It is not a de Polignac number, because 103123210513 - 2¹ = 103123210511 is a prime.

Together with 103123210511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (103123210511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51561605256 + 51561605257.

It is an arithmetic number, because the mean of its divisors is an integer number (51561605257).

Almost surely, 2^103123210513 is an apocalyptic number.

It is an amenable number.

103123210513 is a deficient number, since it is larger than the sum of its proper divisors (1).

103123210513 is an equidigital number, since it uses as much as digits as its factorization.

103123210513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 103123210513 its reverse (315012321301), we get a palindrome (418135531814).

The spelling of 103123210513 in words is "one hundred three billion, one hundred twenty-three million, two hundred ten thousand, five hundred thirteen".