1331130020240 has 160 divisors (see below), whose sum is σ = 3144128762880. Its totient is φ = 524064079872.

The previous prime is 1331130020239. The next prime is 1331130020273. The reversal of 1331130020240 is 420200311331.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 849475937 + ... + 849477503.

It is an arithmetic number, because the mean of its divisors is an integer number (19650804768).

Almost surely, 2^{1331130020240} is an apocalyptic number.

1331130020240 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 1331130020240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1572064381440).

1331130020240 is an abundant number, since it is smaller than the sum of its proper divisors (1812998742640).

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

1331130020240 is a wasteful number, since it uses less digits than its factorization.

1331130020240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329 (or 2323 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1331130020240 its reverse (420200311331), we get a palindrome (1751330331571).

The spelling of 1331130020240 in words is "one trillion, three hundred thirty-one billion, one hundred thirty million, twenty thousand, two hundred forty".