1031222130 has 128 divisors (see below), whose sum is σ = 2649563136. Its totient is φ = 256435200.

The previous prime is 1031222117. The next prime is 1031222147. The reversal of 1031222130 is 312221301.

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 63 ways as a sum of consecutive naturals, for example, 4278810 + ... + 4279050.

It is an arithmetic number, because the mean of its divisors is an integer number (20699712).

Almost surely, 2^1031222130 is an apocalyptic number.

1031222130 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 1031222130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1324781568).

1031222130 is an abundant number, since it is smaller than the sum of its proper divisors (1618341006).

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

1031222130 is a wasteful number, since it uses less digits than its factorization.

1031222130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1031222130 is about 32112.6475084195. The cubic root of 1031222130 is about 1010.3009037112.

Adding to 1031222130 its reverse (312221301), we get a palindrome (1343443431).

The spelling of 1031222130 in words is "one billion, thirty-one million, two hundred twenty-two thousand, one hundred thirty".