100223971 has 4 divisors (see below), whose sum is σ = 103680000. Its totient is φ = 96767944.

The previous prime is 100223957. The next prime is 100223987. The reversal of 100223971 is 179322001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 179322001 = 17 ⋅10548353.

It is a cyclic number.

It is not a de Polignac number, because 100223971 - 2⁵ = 100223939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100223951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1727971 + ... + 1728028.

It is an arithmetic number, because the mean of its divisors is an integer number (25920000).

Almost surely, 2^100223971 is an apocalyptic number.

100223971 is a deficient number, since it is larger than the sum of its proper divisors (3456029).

100223971 is an equidigital number, since it uses as much as digits as its factorization.

100223971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3456028.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 100223971 is about 10011.1922866360. The cubic root of 100223971 is about 464.5051520735.

Adding to 100223971 its reverse (179322001), we get a palindrome (279545972).

The spelling of 100223971 in words is "one hundred million, two hundred twenty-three thousand, nine hundred seventy-one".