20320331202 has 12 divisors (see below), whose sum is σ = 44027384310. Its totient is φ = 6773443728.

The previous prime is 20320331201. The next prime is 20320331221. The reversal of 20320331202 is 20213302302.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17255712321 + 3064618881 = 131361^2 + 55359^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1128907289 = 20320331202 / (2 + 0 + 3 + 2 + 0 + 3 + 3 + 1 + 2 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (20320331201) 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 5 ways as a sum of consecutive naturals, for example, 564453627 + ... + 564453662.

Almost surely, 2^20320331202 is an apocalyptic number.

20320331202 is an abundant number, since it is smaller than the sum of its proper divisors (23707053108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20320331202 is a wasteful number, since it uses less digits than its factorization.

20320331202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128907297 (or 1128907294 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 20320331202 its reverse (20213302302), we get a palindrome (40533633504).

The spelling of 20320331202 in words is "twenty billion, three hundred twenty million, three hundred thirty-one thousand, two hundred two".