20321312322 has 16 divisors (see below), whose sum is σ = 41015494080. Its totient is φ = 6711625872.

The previous prime is 20321312317. The next prime is 20321312327. The reversal of 20321312322 is 22321312302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20321312317) and next prime (20321312327).

It is not an unprimeable number, because it can be changed into a prime (20321312327) 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, 15535518 + ... + 15536825.

It is an arithmetic number, because the mean of its divisors is an integer number (2563468380).

Almost surely, 2^20321312322 is an apocalyptic number.

20321312322 is an abundant number, since it is smaller than the sum of its proper divisors (20694181758).

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

20321312322 is a wasteful number, since it uses less digits than its factorization.

20321312322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31072457.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20321312322 its reverse (22321312302), we get a palindrome (42642624624).

The spelling of 20321312322 in words is "twenty billion, three hundred twenty-one million, three hundred twelve thousand, three hundred twenty-two".