20131232330 has 16 divisors (see below), whose sum is σ = 39530420064. Its totient is φ = 7320448080.

The previous prime is 20131232327. The next prime is 20131232339. The reversal of 20131232330 is 3323213102.

It is not an unprimeable number, because it can be changed into a prime (20131232339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91505492 + ... + 91505711.

It is an arithmetic number, because the mean of its divisors is an integer number (2470651254).

Almost surely, 2^20131232330 is an apocalyptic number.

20131232330 is a deficient number, since it is larger than the sum of its proper divisors (19399187734).

20131232330 is a wasteful number, since it uses less digits than its factorization.

20131232330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183011221.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20131232330 its reverse (3323213102), we get a palindrome (23454445432).

The spelling of 20131232330 in words is "twenty billion, one hundred thirty-one million, two hundred thirty-two thousand, three hundred thirty".