230631642 has 24 divisors (see below), whose sum is σ = 511891380. Its totient is φ = 75001920.

The previous prime is 230631641. The next prime is 230631659. The reversal of 230631642 is 246136032.

230631642 is a `hidden beast` number, since 2 + 306 + 316 + 42 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 194017041 + 36614601 = 13929^2 + 6051^2 .

It is not an unprimeable number, because it can be changed into a prime (230631641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155517 + ... + 156992.

Almost surely, 2^230631642 is an apocalyptic number.

230631642 is an abundant number, since it is smaller than the sum of its proper divisors (281259738).

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

230631642 is a wasteful number, since it uses less digits than its factorization.

230631642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312558 (or 312555 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 230631642 is about 15186.5612302456. The cubic root of 230631642 is about 613.2529278523.

Adding to 230631642 its reverse (246136032), we get a palindrome (476767674).

The spelling of 230631642 in words is "two hundred thirty million, six hundred thirty-one thousand, six hundred forty-two".