1312202320044 has 96 divisors (see below), whose sum is σ = 3819897349632. Its totient is φ = 340601280000.

The previous prime is 1312202320043. The next prime is 1312202320063. The reversal of 1312202320044 is 4400232022131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1312202319996 and 1312202320023.

It is not an unprimeable number, because it can be changed into a prime (1312202320043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 888994 + ... + 1847894.

It is an arithmetic number, because the mean of its divisors is an integer number (39790597392).

Almost surely, 2^{1312202320044} is an apocalyptic number.

1312202320044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312202320044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1909948674816).

1312202320044 is an abundant number, since it is smaller than the sum of its proper divisors (2507695029588).

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

1312202320044 is a wasteful number, since it uses less digits than its factorization.

1312202320044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960407 (or 960405 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1312202320044 its reverse (4400232022131), we get a palindrome (5712434342175).

The spelling of 1312202320044 in words is "one trillion, three hundred twelve billion, two hundred two million, three hundred twenty thousand, forty-four".