103513609 has 2 divisors, whose sum is σ = 103513610. Its totient is φ = 103513608.

The previous prime is 103513603. The next prime is 103513633. The reversal of 103513609 is 906315301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88303609 + 15210000 = 9397^2 + 3900^2 .

It is an emirp because it is prime and its reverse (906315301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103513609 - 2³ = 103513601 is a prime.

It is not a weakly prime, because it can be changed into another prime (103513601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51756804 + 51756805.

It is an arithmetic number, because the mean of its divisors is an integer number (51756805).

Almost surely, 2^103513609 is an apocalyptic number.

It is an amenable number.

103513609 is a deficient number, since it is larger than the sum of its proper divisors (1).

103513609 is an equidigital number, since it uses as much as digits as its factorization.

103513609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 103513609 is about 10174.1637985635. The cubic root of 103513609 is about 469.5326711383.

The spelling of 103513609 in words is "one hundred three million, five hundred thirteen thousand, six hundred nine".