100323155 has 4 divisors (see below), whose sum is σ = 120387792. Its totient is φ = 80258520.

The previous prime is 100323149. The next prime is 100323163. The reversal of 100323155 is 551323001.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-100323155 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10032311 + ... + 10032320.

It is an arithmetic number, because the mean of its divisors is an integer number (30096948).

Almost surely, 2^100323155 is an apocalyptic number.

100323155 is a deficient number, since it is larger than the sum of its proper divisors (20064637).

100323155 is an equidigital number, since it uses as much as digits as its factorization.

100323155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20064636.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 100323155 is about 10016.1447174050. The cubic root of 100323155 is about 464.6583299646.

Adding to 100323155 its reverse (551323001), we get a palindrome (651646156).

The spelling of 100323155 in words is "one hundred million, three hundred twenty-three thousand, one hundred fifty-five".