231303232330 has 16 divisors (see below), whose sum is σ = 440836749000. Its totient is φ = 87078863872.

The previous prime is 231303232319. The next prime is 231303232331. The reversal of 231303232330 is 33232303132.

It can be written as a sum of positive squares in 4 ways, for example, as 215502993729 + 15800238601 = 464223^2 + 125699^2 .

It is a junction number, because it is equal to n+sod(n) for n = 231303232295 and 231303232304.

It is not an unprimeable number, because it can be changed into a prime (231303232331) 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, 680303455 + ... + 680303794.

Almost surely, 2^231303232330 is an apocalyptic number.

231303232330 is a deficient number, since it is larger than the sum of its proper divisors (209533516670).

231303232330 is a wasteful number, since it uses less digits than its factorization.

231303232330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360607273.

The product of its (nonzero) digits is 5832, while the sum is 25.

Adding to 231303232330 its reverse (33232303132), we get a palindrome (264535535462).

The spelling of 231303232330 in words is "two hundred thirty-one billion, three hundred three million, two hundred thirty-two thousand, three hundred thirty".