10319509 has 2 divisors, whose sum is σ = 10319510. Its totient is φ = 10319508.

The previous prime is 10319503. The next prime is 10319521. The reversal of 10319509 is 90591301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5189284 + 5130225 = 2278^2 + 2265^2 .

It is an emirp because it is prime and its reverse (90591301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10319509 - 2³ = 10319501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10319501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5159754 + 5159755.

It is an arithmetic number, because the mean of its divisors is an integer number (5159755).

Almost surely, 2^10319509 is an apocalyptic number.

It is an amenable number.

10319509 is a deficient number, since it is larger than the sum of its proper divisors (1).

10319509 is an equidigital number, since it uses as much as digits as its factorization.

10319509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 10319509 is about 3212.3992591208. The cubic root of 10319509 is about 217.7139938171.

The spelling of 10319509 in words is "ten million, three hundred nineteen thousand, five hundred nine".