231404330 has 8 divisors (see below), whose sum is σ = 416527812. Its totient is φ = 92561728.

The previous prime is 231404317. The next prime is 231404339. The reversal of 231404330 is 33404132.

It can be written as a sum of positive squares in 2 ways, for example, as 222695929 + 8708401 = 14923^2 + 2951^2 .

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 (231404339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11570207 + ... + 11570226.

Almost surely, 2^231404330 is an apocalyptic number.

231404330 is a deficient number, since it is larger than the sum of its proper divisors (185123482).

231404330 is a wasteful number, since it uses less digits than its factorization.

231404330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23140440.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 231404330 is about 15211.9798185509. The cubic root of 231404330 is about 613.9370273563.

Adding to 231404330 its reverse (33404132), we get a palindrome (264808462).

The spelling of 231404330 in words is "two hundred thirty-one million, four hundred four thousand, three hundred thirty".