10312809 has 16 divisors (see below), whose sum is σ = 15453312. Its totient is φ = 6069888.

The previous prime is 10312789. The next prime is 10312811. The reversal of 10312809 is 90821301.

It is not a de Polignac number, because 10312809 - 2⁷ = 10312681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10312889) 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 15 ways as a sum of consecutive naturals, for example, 4852 + ... + 6645.

It is an arithmetic number, because the mean of its divisors is an integer number (965832).

Almost surely, 2^10312809 is an apocalyptic number.

It is an amenable number.

10312809 is a deficient number, since it is larger than the sum of its proper divisors (5140503).

10312809 is a wasteful number, since it uses less digits than its factorization.

10312809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11536.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 10312809 is about 3211.3562555406. The cubic root of 10312809 is about 217.6668662662. Note that the first 3 decimals are identical.

The spelling of 10312809 in words is "ten million, three hundred twelve thousand, eight hundred nine".