20331232004 has 6 divisors (see below), whose sum is σ = 35579656014. Its totient is φ = 10165616000.

The previous prime is 20331231997. The next prime is 20331232057. The reversal of 20331232004 is 40023213302.

It can be written as a sum of positive squares in only one way, i.e., 16151868100 + 4179363904 = 127090^2 + 64648^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2541403997 + ... + 2541404004.

It is an arithmetic number, because the mean of its divisors is an integer number (5929942669).

Almost surely, 2^20331232004 is an apocalyptic number.

It is an amenable number.

20331232004 is a deficient number, since it is larger than the sum of its proper divisors (15248424010).

20331232004 is a wasteful number, since it uses less digits than its factorization.

20331232004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5082808005 (or 5082808003 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20331232004 its reverse (40023213302), we get a palindrome (60354445306).

The spelling of 20331232004 in words is "twenty billion, three hundred thirty-one million, two hundred thirty-two thousand, four".