100320111 has 12 divisors (see below), whose sum is σ = 153430992. Its totient is φ = 62945856.

The previous prime is 100320109. The next prime is 100320127. The reversal of 100320111 is 111023001.

It is not a de Polignac number, because 100320111 - 2¹ = 100320109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 100320093 and 100320102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100320151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 327691 + ... + 327996.

It is an arithmetic number, because the mean of its divisors is an integer number (12785916).

Almost surely, 2^100320111 is an apocalyptic number.

100320111 is a deficient number, since it is larger than the sum of its proper divisors (53110881).

100320111 is a wasteful number, since it uses less digits than its factorization.

100320111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655710 (or 655707 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 100320111 is about 10015.9927615789. The cubic root of 100320111 is about 464.6536303707.

Adding to 100320111 its reverse (111023001), we get a palindrome (211343112).

The spelling of 100320111 in words is "one hundred million, three hundred twenty thousand, one hundred eleven".