231111104 has 28 divisors (see below), whose sum is σ = 524127984. Its totient is φ = 99047424.

The previous prime is 231111031. The next prime is 231111109. The reversal of 231111104 is 401111132.

231111104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (28).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231111109) 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, 257489 + ... + 258384.

Almost surely, 2^231111104 is an apocalyptic number.

It is an amenable number.

231111104 is an abundant number, since it is smaller than the sum of its proper divisors (293016880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231111104 is an equidigital number, since it uses as much as digits as its factorization.

231111104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515892 (or 515882 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 231111104 is about 15202.3387674397. The cubic root of 231111104 is about 613.6775992069.

Adding to 231111104 its reverse (401111132), we get a palindrome (632222236).

The spelling of 231111104 in words is "two hundred thirty-one million, one hundred eleven thousand, one hundred four".