100523173 has 4 divisors (see below), whose sum is σ = 103765888. Its totient is φ = 97280460.

The previous prime is 100523147. The next prime is 100523221. The reversal of 100523173 is 371325001.

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, and also an emirpimes, since its reverse is a distinct semiprime: 371325001 = 167 ⋅2223503.

It is a cyclic number.

It is not a de Polignac number, because 100523173 - 2¹⁷ = 100392101 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 (100523123) 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, 1621311 + ... + 1621372.

It is an arithmetic number, because the mean of its divisors is an integer number (25941472).

Almost surely, 2^100523173 is an apocalyptic number.

It is an amenable number.

100523173 is a deficient number, since it is larger than the sum of its proper divisors (3242715).

100523173 is an equidigital number, since it uses as much as digits as its factorization.

100523173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3242714.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 100523173 is about 10026.1245254585. The cubic root of 100523173 is about 464.9669271579.

Adding to 100523173 its reverse (371325001), we get a palindrome (471848174).

It can be divided in two parts, 10052 and 3173, that added together give a square (13225 = 115²).

The spelling of 100523173 in words is "one hundred million, five hundred twenty-three thousand, one hundred seventy-three".