19319 has 2 divisors, whose sum is σ = 19320. Its totient is φ = 19318.

The previous prime is 19309. The next prime is 19333. The reversal of 19319 is 91391.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^{k}-19319 is a prime.

It is a super-2 number, since 2×19319^{2} = 746447522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a plaindrome in base 8 and base 15.

It is a junction number, because it is equal to *n*+sod(*n*) for *n* = 19294 and 19303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9659 + 9660.

It is an arithmetic number, because the mean of its divisors is an integer number (9660).

2^{19319} is an apocalyptic number.

19319 is a deficient number, since it is larger than the sum of its proper divisors (1).

19319 is an equidigital number, since it uses as much as digits as its factorization.

19319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 243, while the sum is 23.

The square root of 19319 is about 138.9928055692. The cubic root of 19319 is about 26.8325252983.

It can be divided in two parts, 193 and 19, that added together give a palindrome (212).

The spelling of 19319 in words is "nineteen thousand, three hundred nineteen".

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