1020031320 has 256 divisors, whose sum is σ = 3856481280. Its totient is φ = 209664000.

The previous prime is 1020031303. The next prime is 1020031357. The reversal of 1020031320 is 231300201.

It is a happy number.

1020031320 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 (12).

It is a junction number, because it is equal to n+sod(n) for n = 1020031296 and 1020031305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 932694 + ... + 933786.

It is an arithmetic number, because the mean of its divisors is an integer number (15064380).

Almost surely, 2^1020031320 is an apocalyptic number.

1020031320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020031320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1928240640).

1020031320 is an abundant number, since it is smaller than the sum of its proper divisors (2836449960).

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

1020031320 is a wasteful number, since it uses less digits than its factorization.

1020031320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226 (or 1222 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1020031320 is about 31937.9291751986. The cubic root of 1020031320 is about 1006.6330125342.

Adding to 1020031320 its reverse (231300201), we get a palindrome (1251331521).

The spelling of 1020031320 in words is "one billion, twenty million, thirty-one thousand, three hundred twenty".