231242005 has 8 divisors (see below), whose sum is σ = 277579224. Its totient is φ = 184934400.

The previous prime is 231241993. The next prime is 231242029. The reversal of 231242005 is 500242132.

231242005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 53846244 + 177395761 = 7338^2 + 13319^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231242005 - 2⁷ = 231241877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17245 + ... + 27565.

It is an arithmetic number, because the mean of its divisors is an integer number (34697403).

Almost surely, 2^231242005 is an apocalyptic number.

It is an amenable number.

231242005 is a deficient number, since it is larger than the sum of its proper divisors (46337219).

231242005 is a wasteful number, since it uses less digits than its factorization.

231242005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14807.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 231242005 is about 15206.6434494927. The cubic root of 231242005 is about 613.7934393784.

Adding to 231242005 its reverse (500242132), we get a palindrome (731484137).

The spelling of 231242005 in words is "two hundred thirty-one million, two hundred forty-two thousand, five".