20311132302244 has 96 divisors (see below), whose sum is σ = 43521098915840. Its totient is φ = 8100267753600.

The previous prime is 20311132302221. The next prime is 20311132302283. The reversal of 20311132302244 is 44220323111302.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23162149 + ... + 24023059.

Almost surely, 2^{20311132302244} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20311132302244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21760549457920).

20311132302244 is an abundant number, since it is smaller than the sum of its proper divisors (23209966613596).

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

20311132302244 is a wasteful number, since it uses less digits than its factorization.

20311132302244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861729 (or 861727 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 20311132302244 its reverse (44220323111302), we get a palindrome (64531455413546).

The spelling of 20311132302244 in words is "twenty trillion, three hundred eleven billion, one hundred thirty-two million, three hundred two thousand, two hundred forty-four".