1023021320 has 32 divisors (see below), whose sum is σ = 2303881920. Its totient is φ = 408838080.

The previous prime is 1023021289. The next prime is 1023021331. The reversal of 1023021320 is 231203201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1023021295 and 1023021304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35525 + ... + 57515.

It is an arithmetic number, because the mean of its divisors is an integer number (71996310).

Almost surely, 2^1023021320 is an apocalyptic number.

1023021320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023021320 is an abundant number, since it is smaller than the sum of its proper divisors (1280860600).

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

1023021320 is a wasteful number, since it uses less digits than its factorization.

1023021320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23165 (or 23161 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1023021320 is about 31984.7044694804. The cubic root of 1023021320 is about 1007.6156283089.

Adding to 1023021320 its reverse (231203201), we get a palindrome (1254224521).

The spelling of 1023021320 in words is "one billion, twenty-three million, twenty-one thousand, three hundred twenty".