231006242 has 4 divisors (see below), whose sum is σ = 346509366. Its totient is φ = 115503120.

The previous prime is 231006233. The next prime is 231006253. The reversal of 231006242 is 242600132.

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

It can be written as a sum of positive squares in only one way, i.e., 143976001 + 87030241 = 11999^2 + 9329^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57751559 + ... + 57751562.

Almost surely, 2^231006242 is an apocalyptic number.

231006242 is a deficient number, since it is larger than the sum of its proper divisors (115503124).

231006242 is a wasteful number, since it uses less digits than its factorization.

231006242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115503123.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 231006242 is about 15198.8894989075. The cubic root of 231006242 is about 613.5847705566.

Adding to 231006242 its reverse (242600132), we get a palindrome (473606374).

The spelling of 231006242 in words is "two hundred thirty-one million, six thousand, two hundred forty-two".