13451309 has 2 divisors, whose sum is σ = 13451310. Its totient is φ = 13451308.

The previous prime is 13451299. The next prime is 13451311. The reversal of 13451309 is 90315431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10745284 + 2706025 = 3278^2 + 1645^2 .

It is a cyclic number.

It is not a de Polignac number, because 13451309 - 2¹⁶ = 13385773 is a prime.

Together with 13451311, 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 (13451329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6725654 + 6725655.

It is an arithmetic number, because the mean of its divisors is an integer number (6725655).

Almost surely, 2^13451309 is an apocalyptic number.

It is an amenable number.

13451309 is a deficient number, since it is larger than the sum of its proper divisors (1).

13451309 is an equidigital number, since it uses as much as digits as its factorization.

13451309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 13451309 is about 3667.6026229678. The cubic root of 13451309 is about 237.8235457378.

The spelling of 13451309 in words is "thirteen million, four hundred fifty-one thousand, three hundred nine".