231430634 has 8 divisors (see below), whose sum is σ = 356528388. Its totient is φ = 112587840.

The previous prime is 231430561. The next prime is 231430637. The reversal of 231430634 is 436034132.

It is a happy number.

231430634 is digitally balanced in base 3, 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 2 ways, for example, as 214183225 + 17247409 = 14635^2 + 4153^2 .

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

It is not an unprimeable number, because it can be changed into a prime (231430637) 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 3 ways as a sum of consecutive naturals, for example, 1563647 + ... + 1563794.

Almost surely, 2^231430634 is an apocalyptic number.

231430634 is a deficient number, since it is larger than the sum of its proper divisors (125097754).

231430634 is a wasteful number, since it uses less digits than its factorization.

231430634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3127480.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 231430634 is about 15212.8443757241. The cubic root of 231430634 is about 613.9602887876.

Adding to 231430634 its reverse (436034132), we get a palindrome (667464766).

The spelling of 231430634 in words is "two hundred thirty-one million, four hundred thirty thousand, six hundred thirty-four".