20310231232 has 28 divisors (see below), whose sum is σ = 40392934200. Its totient is φ = 10132484096.

The previous prime is 20310231187. The next prime is 20310231239. The reversal of 20310231232 is 23213201302.

It is not an unprimeable number, because it can be changed into a prime (20310231239) 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, 324658 + ... + 382129.

Almost surely, 2^20310231232 is an apocalyptic number.

It is an amenable number.

20310231232 is a deficient number, since it is larger than the sum of its proper divisors (20082702968).

20310231232 is an equidigital number, since it uses as much as digits as its factorization.

20310231232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707248 (or 707238 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20310231232 its reverse (23213201302), we get a palindrome (43523432534).

The spelling of 20310231232 in words is "twenty billion, three hundred ten million, two hundred thirty-one thousand, two hundred thirty-two".