105406823 has 2 divisors, whose sum is σ = 105406824. Its totient is φ = 105406822.

The previous prime is 105406811. The next prime is 105406849. The reversal of 105406823 is 328604501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105406823 - 2¹⁰ = 105405799 is a prime.

It is a super-2 number, since 2×105406823² = 22221196669906658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105406423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52703411 + 52703412.

It is an arithmetic number, because the mean of its divisors is an integer number (52703412).

Almost surely, 2^105406823 is an apocalyptic number.

105406823 is a deficient number, since it is larger than the sum of its proper divisors (1).

105406823 is an equidigital number, since it uses as much as digits as its factorization.

105406823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 105406823 is about 10266.7825047578. The cubic root of 105406823 is about 472.3779037473.

The spelling of 105406823 in words is "one hundred five million, four hundred six thousand, eight hundred twenty-three".