10309219 has 4 divisors (see below), whose sum is σ = 10325896. Its totient is φ = 10292544.

The previous prime is 10309193. The next prime is 10309237. The reversal of 10309219 is 91290301.

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

It is a cyclic number.

It is not a de Polignac number, because 10309219 - 2⁹ = 10308707 is a prime.

It is a super-2 number, since 2×10309219² = 212559992779922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10309193 and 10309202.

It is not an unprimeable number, because it can be changed into a prime (10309289) 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, 7374 + ... + 8659.

It is an arithmetic number, because the mean of its divisors is an integer number (2581474).

Almost surely, 2^10309219 is an apocalyptic number.

10309219 is a deficient number, since it is larger than the sum of its proper divisors (16677).

10309219 is an equidigital number, since it uses as much as digits as its factorization.

10309219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16676.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 10309219 is about 3210.7972530199. The cubic root of 10309219 is about 217.6416059405.

The spelling of 10309219 in words is "ten million, three hundred nine thousand, two hundred nineteen".