9131306 has 4 divisors (see below), whose sum is σ = 13696962. Its totient is φ = 4565652.

The previous prime is 9131303. The next prime is 9131321. The reversal of 9131306 is 6031319.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6031319 = 7 ⋅861617.

It can be written as a sum of positive squares in only one way, i.e., 6713281 + 2418025 = 2591^2 + 1555^2 .

It is not an unprimeable number, because it can be changed into a prime (9131303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2282825 + ... + 2282828.

Almost surely, 2^9131306 is an apocalyptic number.

9131306 is a deficient number, since it is larger than the sum of its proper divisors (4565656).

9131306 is a wasteful number, since it uses less digits than its factorization.

9131306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4565655.

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

The square root of 9131306 is about 3021.8050896774. The cubic root of 9131306 is about 209.0150855620.

The spelling of 9131306 in words is "nine million, one hundred thirty-one thousand, three hundred six".