13308961 has 2 divisors, whose sum is σ = 13308962. Its totient is φ = 13308960.

The previous prime is 13308959. The next prime is 13308979. The reversal of 13308961 is 16980331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11189025 + 2119936 = 3345^2 + 1456^2 .

It is a cyclic number.

It is not a de Polignac number, because 13308961 - 2¹ = 13308959 is a prime.

Together with 13308959, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13308931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6654480 + 6654481.

It is an arithmetic number, because the mean of its divisors is an integer number (6654481).

Almost surely, 2^13308961 is an apocalyptic number.

13308961 is the 1632-nd centered decagonal number.

It is an amenable number.

13308961 is a deficient number, since it is larger than the sum of its proper divisors (1).

13308961 is an equidigital number, since it uses as much as digits as its factorization.

13308961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 13308961 is about 3648.1448710269. The cubic root of 13308961 is about 236.9816491931.

The spelling of 13308961 in words is "thirteen million, three hundred eight thousand, nine hundred sixty-one".