109423 has 2 divisors, whose sum is σ = 109424. Its totient is φ = 109422.

The previous prime is 109397. The next prime is 109433. The reversal of 109423 is 324901.

It is a strong prime.

It is an emirp because it is prime and its reverse (324901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109423 - 2⁵ = 109391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54711 + 54712.

It is an arithmetic number, because the mean of its divisors is an integer number (54712).

2¹⁰⁹⁴²³ is an apocalyptic number.

109423 is a deficient number, since it is larger than the sum of its proper divisors (1).

109423 is an equidigital number, since it uses as much as digits as its factorization.

109423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 109423 is about 330.7914751018. The cubic root of 109423 is about 47.8302744088.

The spelling of 109423 in words is "one hundred nine thousand, four hundred twenty-three".