1304441131420 has 144 divisors (see below), whose sum is σ = 3377634386112. Its totient is φ = 420476528640.

The previous prime is 1304441131393. The next prime is 1304441131447. The reversal of 1304441131420 is 241311444031.

It is an interprime number because it is at equal distance from previous prime (1304441131393) and next prime (1304441131447).

It is a super-2 number, since 2×1304441131420² (a number of 25 digits) contains 22 as substring.

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

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 47 ways as a sum of consecutive naturals, for example, 15635457 + ... + 15718663.

It is an arithmetic number, because the mean of its divisors is an integer number (23455794348).

Almost surely, 2^{1304441131420} is an apocalyptic number.

1304441131420 is a gapful number since it is divisible by the number (10) 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 1304441131420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1688817193056).

1304441131420 is an abundant number, since it is smaller than the sum of its proper divisors (2073193254692).

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

1304441131420 is a wasteful number, since it uses less digits than its factorization.

1304441131420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84188 (or 84179 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 1304441131420 its reverse (241311444031), we get a palindrome (1545752575451).

The spelling of 1304441131420 in words is "one trillion, three hundred four billion, four hundred forty-one million, one hundred thirty-one thousand, four hundred twenty".