20312243022 has 32 divisors (see below), whose sum is σ = 40886052480. Its totient is φ = 6727218080.

The previous prime is 20312242987. The next prime is 20312243041. The reversal of 20312243022 is 22034221302.

It is a self number, because there is not a number n which added to its sum of digits gives 20312243022.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1370572 + ... + 1385312.

It is an arithmetic number, because the mean of its divisors is an integer number (1277689140).

Almost surely, 2^20312243022 is an apocalyptic number.

20312243022 is an abundant number, since it is smaller than the sum of its proper divisors (20573809458).

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

20312243022 is a wasteful number, since it uses less digits than its factorization.

20312243022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16208.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20312243022 its reverse (22034221302), we get a palindrome (42346464324).

The spelling of 20312243022 in words is "twenty billion, three hundred twelve million, two hundred forty-three thousand, twenty-two".