103493309 has 2 divisors, whose sum is σ = 103493310. Its totient is φ = 103493308.

The previous prime is 103493293. The next prime is 103493311. The reversal of 103493309 is 903394301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64080025 + 39413284 = 8005^2 + 6278^2 .

It is a cyclic number.

It is not a de Polignac number, because 103493309 - 2⁴ = 103493293 is a prime.

Together with 103493311, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103493339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51746654 + 51746655.

It is an arithmetic number, because the mean of its divisors is an integer number (51746655).

Almost surely, 2^103493309 is an apocalyptic number.

It is an amenable number.

103493309 is a deficient number, since it is larger than the sum of its proper divisors (1).

103493309 is an equidigital number, since it uses as much as digits as its factorization.

103493309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 103493309 is about 10173.1661246635. The cubic root of 103493309 is about 469.5019758624.

The spelling of 103493309 in words is "one hundred three million, four hundred ninety-three thousand, three hundred nine".