13061331 has 20 divisors (see below), whose sum is σ = 19697832. Its totient is φ = 8624448.

The previous prime is 13061317. The next prime is 13061357. The reversal of 13061331 is 13316031.

It is not a de Polignac number, because 13061331 - 2⁷ = 13061203 is a prime.

It is a super-2 number, since 2×13061331² = 341196734983122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13061311) 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 19 ways as a sum of consecutive naturals, for example, 8440 + ... + 9866.

Almost surely, 2^13061331 is an apocalyptic number.

13061331 is a deficient number, since it is larger than the sum of its proper divisors (6636501).

13061331 is a wasteful number, since it uses less digits than its factorization.

13061331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552 (or 1543 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 13061331 is about 3614.0463472402. The cubic root of 13061331 is about 235.5026572786.

Adding to 13061331 its reverse (13316031), we get a palindrome (26377362).

The spelling of 13061331 in words is "thirteen million, sixty-one thousand, three hundred thirty-one".