1023315020 has 144 divisors (see below), whose sum is σ = 2750993280. Its totient is φ = 316786176.

The previous prime is 1023314953. The next prime is 1023315049. The reversal of 1023315020 is 205133201.

It is a self number, because there is not a number n which added to its sum of digits gives 1023315020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 597926 + ... + 599634.

It is an arithmetic number, because the mean of its divisors is an integer number (19104120).

Almost surely, 2^1023315020 is an apocalyptic number.

1023315020 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 1023315020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1375496640).

1023315020 is an abundant number, since it is smaller than the sum of its proper divisors (1727678260).

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

1023315020 is a wasteful number, since it uses less digits than its factorization.

1023315020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1792 (or 1783 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 1023315020 is about 31989.2953970543. The cubic root of 1023315020 is about 1007.7120448053.

Adding to 1023315020 its reverse (205133201), we get a palindrome (1228448221).

The spelling of 1023315020 in words is "one billion, twenty-three million, three hundred fifteen thousand, twenty".