103919 has 2 divisors, whose sum is σ = 103920. Its totient is φ = 103918.

The previous prime is 103913. The next prime is 103951. The reversal of 103919 is 919301.

It is a weak prime.

It is an emirp because it is prime and its reverse (919301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103919 - 2⁴ = 103903 is a prime.

It is a super-2 number, since 2×103919² = 21598317122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 103894 and 103903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51959 + 51960.

It is an arithmetic number, because the mean of its divisors is an integer number (51960).

2¹⁰³⁹¹⁹ is an apocalyptic number.

103919 is a deficient number, since it is larger than the sum of its proper divisors (1).

103919 is an equidigital number, since it uses as much as digits as its factorization.

103919 is an evil number, because the sum of its binary digits is even.

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

The square root of 103919 is about 322.3647003008. The cubic root of 103919 is about 47.0144817303.

The spelling of 103919 in words is "one hundred three thousand, nine hundred nineteen".