100231111 has 4 divisors (see below), whose sum is σ = 100290424. Its totient is φ = 100171800.

The previous prime is 100231097. The next prime is 100231121. The reversal of 100231111 is 111132001.

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

It is a cyclic number.

It is not a de Polignac number, because 100231111 - 2¹³ = 100222919 is a prime.

It is a super-2 number, since 2×100231111² = 20092551224588642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100231121) 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, 27045 + ... + 30526.

It is an arithmetic number, because the mean of its divisors is an integer number (25072606).

Almost surely, 2^100231111 is an apocalyptic number.

100231111 is a deficient number, since it is larger than the sum of its proper divisors (59313).

100231111 is an equidigital number, since it uses as much as digits as its factorization.

100231111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59312.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 100231111 is about 10011.5488811672. The cubic root of 100231111 is about 464.5161823290.

Adding to 100231111 its reverse (111132001), we get a palindrome (211363112).

The spelling of 100231111 in words is "one hundred million, two hundred thirty-one thousand, one hundred eleven".