1331020203444 has 96 divisors (see below), whose sum is σ = 3698147523840. Its totient is φ = 412913407104.

The previous prime is 1331020203437. The next prime is 1331020203451. The reversal of 1331020203444 is 4443020201331.

1331020203444 is a `hidden beast` number, since 1 + 3 + 3 + 10 + 2 + 0 + 203 + 444 = 666.

It is an interprime number because it is at equal distance from previous prime (1331020203437) and next prime (1331020203451).

It is a super-2 number, since 2×1331020203444² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 7149139 + ... + 7332954.

It is an arithmetic number, because the mean of its divisors is an integer number (38522370040).

Almost surely, 2^{1331020203444} is an apocalyptic number.

It is an amenable number.

1331020203444 is an abundant number, since it is smaller than the sum of its proper divisors (2367127320396).

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

1331020203444 is a wasteful number, since it uses less digits than its factorization.

1331020203444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14482166 (or 14482158 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 1331020203444 its reverse (4443020201331), we get a palindrome (5774040404775).

The spelling of 1331020203444 in words is "one trillion, three hundred thirty-one billion, twenty million, two hundred three thousand, four hundred forty-four".