100531223 has 16 divisors (see below), whose sum is σ = 114384480. Its totient is φ = 87588864.

The previous prime is 100531199. The next prime is 100531231. The reversal of 100531223 is 322135001.

It is a cyclic number.

It is not a de Polignac number, because 100531223 - 2⁶ = 100531159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100531253) 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 15 ways as a sum of consecutive naturals, for example, 86615 + ... + 87767.

It is an arithmetic number, because the mean of its divisors is an integer number (7149030).

Almost surely, 2^100531223 is an apocalyptic number.

100531223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

100531223 is a deficient number, since it is larger than the sum of its proper divisors (13853257).

100531223 is a wasteful number, since it uses less digits than its factorization.

100531223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 100531223 is about 10026.5259686494. The cubic root of 100531223 is about 464.9793385046.

Adding to 100531223 its reverse (322135001), we get a palindrome (422666224).

The spelling of 100531223 in words is "one hundred million, five hundred thirty-one thousand, two hundred twenty-three".