1021430323320 has 256 divisors, whose sum is σ = 3373195138560. Its totient is φ = 247420800000.

The previous prime is 1021430323289. The next prime is 1021430323363. The reversal of 1021430323320 is 233230341201.

It is a super-3 number, since 3×1021430323320³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 340361820 + ... + 340364820.

It is an arithmetic number, because the mean of its divisors is an integer number (13176543510).

Almost surely, 2^{1021430323320} is an apocalyptic number.

1021430323320 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 1021430323320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1686597569280).

1021430323320 is an abundant number, since it is smaller than the sum of its proper divisors (2351764815240).

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

1021430323320 is a wasteful number, since it uses less digits than its factorization.

1021430323320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5179 (or 5153 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 1021430323320 its reverse (233230341201), we get a palindrome (1254660664521).

The spelling of 1021430323320 in words is "one trillion, twenty-one billion, four hundred thirty million, three hundred twenty-three thousand, three hundred twenty".