106823021 has 4 divisors (see below), whose sum is σ = 107302272. Its totient is φ = 106343772.

The previous prime is 106823011. The next prime is 106823023. The reversal of 106823021 is 120328601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106823021 is a prime.

It is a super-2 number, since 2×106823021² = 22822315631132882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106823023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239291 + ... + 239736.

It is an arithmetic number, because the mean of its divisors is an integer number (26825568).

Almost surely, 2^106823021 is an apocalyptic number.

It is an amenable number.

106823021 is a deficient number, since it is larger than the sum of its proper divisors (479251).

106823021 is an equidigital number, since it uses as much as digits as its factorization.

106823021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479250.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 106823021 is about 10335.5222896572. The cubic root of 106823021 is about 474.4840506697.

The spelling of 106823021 in words is "one hundred six million, eight hundred twenty-three thousand, twenty-one".