1021331130 has 64 divisors (see below), whose sum is σ = 2590185600. Its totient is φ = 257022720.

The previous prime is 1021331119. The next prime is 1021331131. The reversal of 1021331130 is 311331201.

1021331130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (1021331131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150000 + ... + 156660.

It is an arithmetic number, because the mean of its divisors is an integer number (40471650).

Almost surely, 2^1021331130 is an apocalyptic number.

1021331130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021331130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1295092800).

1021331130 is an abundant number, since it is smaller than the sum of its proper divisors (1568854470).

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

1021331130 is a wasteful number, since it uses less digits than its factorization.

1021331130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6959.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1021331130 is about 31958.2716992018. The cubic root of 1021331130 is about 1007.0604099588.

Adding to 1021331130 its reverse (311331201), we get a palindrome (1332662331).

The spelling of 1021331130 in words is "one billion, twenty-one million, three hundred thirty-one thousand, one hundred thirty".