20320331012 has 6 divisors (see below), whose sum is σ = 35560579278. Its totient is φ = 10160165504.

The previous prime is 20320331011. The next prime is 20320331021. The reversal of 20320331012 is 21013302302.

It can be written as a sum of positive squares in only one way, i.e., 11224131136 + 9096199876 = 105944^2 + 95374^2 .

It is not an unprimeable number, because it can be changed into a prime (20320331011) 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 as a sum of consecutive naturals, namely, 2540041373 + ... + 2540041380.

It is an arithmetic number, because the mean of its divisors is an integer number (5926763213).

Almost surely, 2^20320331012 is an apocalyptic number.

It is an amenable number.

20320331012 is a deficient number, since it is larger than the sum of its proper divisors (15240248266).

20320331012 is a wasteful number, since it uses less digits than its factorization.

20320331012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5080082757 (or 5080082755 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20320331012 its reverse (21013302302), we get a palindrome (41333633314).

The spelling of 20320331012 in words is "twenty billion, three hundred twenty million, three hundred thirty-one thousand, twelve".