13091306 has 4 divisors (see below), whose sum is σ = 19636962. Its totient is φ = 6545652.

The previous prime is 13091291. The next prime is 13091311. The reversal of 13091306 is 60319031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12924025 + 167281 = 3595^2 + 409^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3272825 + ... + 3272828.

Almost surely, 2^13091306 is an apocalyptic number.

13091306 is a deficient number, since it is larger than the sum of its proper divisors (6545656).

13091306 is an equidigital number, since it uses as much as digits as its factorization.

13091306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6545655.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 13091306 is about 3618.1909844562. The cubic root of 13091306 is about 235.6826746362.

The spelling of 13091306 in words is "thirteen million, ninety-one thousand, three hundred six".