1331013020 has 12 divisors (see below), whose sum is σ = 2795127384. Its totient is φ = 532405200.

The previous prime is 1331013017. The next prime is 1331013077. The reversal of 1331013020 is 203101331.

It is a junction number, because it is equal to n+sod(n) for n = 1331012986 and 1331013004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33275306 + ... + 33275345.

It is an arithmetic number, because the mean of its divisors is an integer number (232927282).

Almost surely, 2^1331013020 is an apocalyptic number.

1331013020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331013020 is an abundant number, since it is smaller than the sum of its proper divisors (1464114364).

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

1331013020 is a wasteful number, since it uses less digits than its factorization.

1331013020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66550660 (or 66550658 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 1331013020 is about 36483.0511333688. The cubic root of 1331013020 is about 1100.0035867652.

Adding to 1331013020 its reverse (203101331), we get a palindrome (1534114351).

The spelling of 1331013020 in words is "one billion, three hundred thirty-one million, thirteen thousand, twenty".