1331030220 has 48 divisors (see below), whose sum is σ = 4013570400. Its totient is φ = 327638016.

The previous prime is 1331030219. The next prime is 1331030251. The reversal of 1331030220 is 220301331.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1331030220.

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 15 ways as a sum of consecutive naturals, for example, 852445 + ... + 854004.

It is an arithmetic number, because the mean of its divisors is an integer number (83616050).

Almost surely, 2^1331030220 is an apocalyptic number.

1331030220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331030220 is an abundant number, since it is smaller than the sum of its proper divisors (2682540180).

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

1331030220 is a wasteful number, since it uses less digits than its factorization.

1331030220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706474 (or 1706472 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1331030220 is about 36483.2868585055. The cubic root of 1331030220 is about 1100.0083250059.

Adding to 1331030220 its reverse (220301331), we get a palindrome (1551331551).

The spelling of 1331030220 in words is "one billion, three hundred thirty-one million, thirty thousand, two hundred twenty".