231108481 has 4 divisors (see below), whose sum is σ = 231399252. Its totient is φ = 230817712.

The previous prime is 231108469. The next prime is 231108491. The reversal of 231108481 is 184801132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 188650225 + 42458256 = 13735^2 + 6516^2 .

It is a cyclic number.

It is not a de Polignac number, because 231108481 - 2⁹ = 231107969 is a prime.

It is a super-2 number, since 2×231108481² = 106822259980254722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231108491) 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, 144190 + ... + 145783.

It is an arithmetic number, because the mean of its divisors is an integer number (57849813).

Almost surely, 2^231108481 is an apocalyptic number.

It is an amenable number.

231108481 is a deficient number, since it is larger than the sum of its proper divisors (290771).

231108481 is an equidigital number, since it uses as much as digits as its factorization.

231108481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290770.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 231108481 is about 15202.2524975742. The cubic root of 231108481 is about 613.6752775495.

The spelling of 231108481 in words is "two hundred thirty-one million, one hundred eight thousand, four hundred eighty-one".