231405032330 has 32 divisors (see below), whose sum is σ = 420970704336. Its totient is φ = 91575650304.

The previous prime is 231405032323. The next prime is 231405032333. The reversal of 231405032330 is 33230504132.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 21423884161 + 209981148169 = 146369^2 + 458237^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 231405032330.

It is not an unprimeable number, because it can be changed into a prime (231405032333) 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 15 ways as a sum of consecutive naturals, for example, 2827952 + ... + 2908628.

Almost surely, 2^231405032330 is an apocalyptic number.

231405032330 is a deficient number, since it is larger than the sum of its proper divisors (189565672006).

231405032330 is a wasteful number, since it uses less digits than its factorization.

231405032330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83738.

The product of its (nonzero) digits is 6480, while the sum is 26.

Adding to 231405032330 its reverse (33230504132), we get a palindrome (264635536462).

The spelling of 231405032330 in words is "two hundred thirty-one billion, four hundred five million, thirty-two thousand, three hundred thirty".