100866023 has 4 divisors (see below), whose sum is σ = 101249808. Its totient is φ = 100482240.

The previous prime is 100866019. The next prime is 100866043. The reversal of 100866023 is 320668001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320668001 = 23 ⋅13942087.

It is a cyclic number.

It is not a de Polignac number, because 100866023 - 2² = 100866019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100865983 and 100866001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100866043) 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, 191498 + ... + 192023.

It is an arithmetic number, because the mean of its divisors is an integer number (25312452).

Almost surely, 2^100866023 is an apocalyptic number.

100866023 is a deficient number, since it is larger than the sum of its proper divisors (383785).

100866023 is an equidigital number, since it uses as much as digits as its factorization.

100866023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383784.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 100866023 is about 10043.2078042825. The cubic root of 100866023 is about 465.4949414572.

The spelling of 100866023 in words is "one hundred million, eight hundred sixty-six thousand, twenty-three".