10381309 has 4 divisors (see below), whose sum is σ = 10434204. Its totient is φ = 10328416.

The previous prime is 10381297. The next prime is 10381321. The reversal of 10381309 is 90318301.

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

It is an interprime number because it is at equal distance from previous prime (10381297) and next prime (10381321).

It can be written as a sum of positive squares in 2 ways, for example, as 10176100 + 205209 = 3190^2 + 453^2 .

It is a cyclic number.

It is not a de Polignac number, because 10381309 - 2¹³ = 10373117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10381369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26152 + ... + 26545.

It is an arithmetic number, because the mean of its divisors is an integer number (2608551).

Almost surely, 2^10381309 is an apocalyptic number.

It is an amenable number.

10381309 is a deficient number, since it is larger than the sum of its proper divisors (52895).

10381309 is an equidigital number, since it uses as much as digits as its factorization.

10381309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52894.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 10381309 is about 3222.0038795756. The cubic root of 10381309 is about 218.1477339381.

Subtracting from 10381309 its sum of digits (25), we obtain a square (10381284 = 3222²).

The spelling of 10381309 in words is "ten million, three hundred eighty-one thousand, three hundred nine".