231332330 has 16 divisors (see below), whose sum is σ = 416777184. Its totient is φ = 92448720.

The previous prime is 231332329. The next prime is 231332347. The reversal of 231332330 is 33233132.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1685 + ... + 21575.

It is an arithmetic number, because the mean of its divisors is an integer number (26048574).

Almost surely, 2^231332330 is an apocalyptic number.

231332330 is a deficient number, since it is larger than the sum of its proper divisors (185444854).

231332330 is a wasteful number, since it uses less digits than its factorization.

231332330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21061.

The product of its (nonzero) digits is 972, while the sum is 20.

The square root of 231332330 is about 15209.6130785763. The cubic root of 231332330 is about 613.8733465380.

Adding to 231332330 its reverse (33233132), we get a palindrome (264565462).

It can be divided in two parts, 2313 and 32330, that added together give a palindrome (34643).

The spelling of 231332330 in words is "two hundred thirty-one million, three hundred thirty-two thousand, three hundred thirty".