20311302231312 has 40 divisors (see below), whose sum is σ = 52601714182560. Its totient is φ = 6753550195200.

The previous prime is 20311302231301. The next prime is 20311302231317. The reversal of 20311302231312 is 21313220311302.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (20311302231317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527601862 + ... + 527640357.

It is an arithmetic number, because the mean of its divisors is an integer number (1315042854564).

Almost surely, 2^{20311302231312} is an apocalyptic number.

It is an amenable number.

20311302231312 is an abundant number, since it is smaller than the sum of its proper divisors (32290411951248).

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

20311302231312 is a wasteful number, since it uses less digits than its factorization.

20311302231312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055242631 (or 1055242625 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 20311302231312 its reverse (21313220311302), we get a palindrome (41624522542614).

The spelling of 20311302231312 in words is "twenty trillion, three hundred eleven billion, three hundred two million, two hundred thirty-one thousand, three hundred twelve".