231242506 has 16 divisors (see below), whose sum is σ = 394849728. Its totient is φ = 100540000.

The previous prime is 231242467. The next prime is 231242507. The reversal of 231242506 is 605242132.

231242506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (231242507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227995 + ... + 229006.

It is an arithmetic number, because the mean of its divisors is an integer number (24678108).

Almost surely, 2^231242506 is an apocalyptic number.

231242506 is a deficient number, since it is larger than the sum of its proper divisors (163607222).

231242506 is a wasteful number, since it uses less digits than its factorization.

231242506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457037.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 231242506 is about 15206.6599225471. The cubic root of 231242506 is about 613.7938826518.

Adding to 231242506 its reverse (605242132), we get a palindrome (836484638).

The spelling of 231242506 in words is "two hundred thirty-one million, two hundred forty-two thousand, five hundred six".