13102009 has 2 divisors, whose sum is σ = 13102010. Its totient is φ = 13102008.

The previous prime is 13102003. The next prime is 13102013. The reversal of 13102009 is 90020131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11594025 + 1507984 = 3405^2 + 1228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13102009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13101983 and 13102001.

It is not a weakly prime, because it can be changed into another prime (13102003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6551004 + 6551005.

It is an arithmetic number, because the mean of its divisors is an integer number (6551005).

Almost surely, 2^13102009 is an apocalyptic number.

It is an amenable number.

13102009 is a deficient number, since it is larger than the sum of its proper divisors (1).

13102009 is an equidigital number, since it uses as much as digits as its factorization.

13102009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 13102009 is about 3619.6697363157. The cubic root of 13102009 is about 235.7468858142.

The spelling of 13102009 in words is "thirteen million, one hundred two thousand, nine".