1331331232020 has 48 divisors (see below), whose sum is σ = 3739713763968. Its totient is φ = 353880108160.

The previous prime is 1331331232019. The next prime is 1331331232027. The reversal of 1331331232020 is 202321331331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331331232027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35654739 + ... + 35692058.

It is an arithmetic number, because the mean of its divisors is an integer number (77910703416).

Almost surely, 2^{1331331232020} is an apocalyptic number.

1331331232020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331331232020 is an abundant number, since it is smaller than the sum of its proper divisors (2408382531948).

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

1331331232020 is a wasteful number, since it uses less digits than its factorization.

1331331232020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71347120 (or 71347118 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 1331331232020 its reverse (202321331331), we get a palindrome (1533652563351).

The spelling of 1331331232020 in words is "one trillion, three hundred thirty-one billion, three hundred thirty-one million, two hundred thirty-two thousand, twenty".