103249513 has 2 divisors, whose sum is σ = 103249514. Its totient is φ = 103249512.

The previous prime is 103249511. The next prime is 103249571. The reversal of 103249513 is 315942301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85877289 + 17372224 = 9267^2 + 4168^2 .

It is a cyclic number.

It is not a de Polignac number, because 103249513 - 2¹ = 103249511 is a prime.

Together with 103249511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (103249511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51624756 + 51624757.

It is an arithmetic number, because the mean of its divisors is an integer number (51624757).

Almost surely, 2^103249513 is an apocalyptic number.

It is an amenable number.

103249513 is a deficient number, since it is larger than the sum of its proper divisors (1).

103249513 is an equidigital number, since it uses as much as digits as its factorization.

103249513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 103249513 is about 10161.1767527191. The cubic root of 103249513 is about 469.1330222189.

The spelling of 103249513 in words is "one hundred three million, two hundred forty-nine thousand, five hundred thirteen".