105671823 has 4 divisors (see below), whose sum is σ = 140895768. Its totient is φ = 70447880.

The previous prime is 105671789. The next prime is 105671851. The reversal of 105671823 is 328176501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 328176501 = 3 ⋅109392167.

It is a cyclic number.

It is not a de Polignac number, because 105671823 - 2¹⁶ = 105606287 is a prime.

It is a super-2 number, since 2×105671823² = 22333068352286658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105671873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17611968 + ... + 17611973.

It is an arithmetic number, because the mean of its divisors is an integer number (35223942).

Almost surely, 2^105671823 is an apocalyptic number.

105671823 is a deficient number, since it is larger than the sum of its proper divisors (35223945).

105671823 is an equidigital number, since it uses as much as digits as its factorization.

105671823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35223944.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 105671823 is about 10279.6801020265. The cubic root of 105671823 is about 472.7734359762.

The spelling of 105671823 in words is "one hundred five million, six hundred seventy-one thousand, eight hundred twenty-three".