1321031130 has 16 divisors (see below), whose sum is σ = 3170474784. Its totient is φ = 352274960.

The previous prime is 1321031123. The next prime is 1321031149. The reversal of 1321031130 is 311301231.

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22017156 + ... + 22017215.

It is an arithmetic number, because the mean of its divisors is an integer number (198154674).

Almost surely, 2^1321031130 is an apocalyptic number.

1321031130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321031130 is an abundant number, since it is smaller than the sum of its proper divisors (1849443654).

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

1321031130 is a wasteful number, since it uses less digits than its factorization.

1321031130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44034381.

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

The square root of 1321031130 is about 36345.9919385893. The cubic root of 1321031130 is about 1097.2468699103.

Adding to 1321031130 its reverse (311301231), we get a palindrome (1632332361).

The spelling of 1321031130 in words is "one billion, three hundred twenty-one million, thirty-one thousand, one hundred thirty".