13031266 has 8 divisors (see below), whose sum is σ = 20221020. Its totient is φ = 6290928.

The previous prime is 13031261. The next prime is 13031309. The reversal of 13031266 is 66213031.

It can be written as a sum of positive squares in 2 ways, for example, as 11029041 + 2002225 = 3321^2 + 1415^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (13031261) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 112281 + ... + 112396.

Almost surely, 2^13031266 is an apocalyptic number.

13031266 is a deficient number, since it is larger than the sum of its proper divisors (7189754).

13031266 is a wasteful number, since it uses less digits than its factorization.

13031266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224708.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 13031266 is about 3609.8844856865. The cubic root of 13031266 is about 235.3218225441.

Adding to 13031266 its reverse (66213031), we get a palindrome (79244297).

The spelling of 13031266 in words is "thirteen million, thirty-one thousand, two hundred sixty-six".