1331880220 has 24 divisors (see below), whose sum is σ = 3051217008. Its totient is φ = 484320000.

The previous prime is 1331880191. The next prime is 1331880223. The reversal of 1331880220 is 220881331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331880223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3026781 + ... + 3027220.

It is an arithmetic number, because the mean of its divisors is an integer number (127134042).

Almost surely, 2^1331880220 is an apocalyptic number.

1331880220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331880220 is an abundant number, since it is smaller than the sum of its proper divisors (1719336788).

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

1331880220 is a wasteful number, since it uses less digits than its factorization.

1331880220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6054021 (or 6054019 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1331880220 is about 36494.9341690049. The cubic root of 1331880220 is about 1100.2424314146.

The spelling of 1331880220 in words is "one billion, three hundred thirty-one million, eight hundred eighty thousand, two hundred twenty".