1012002320 has 160 divisors (see below), whose sum is σ = 2849817600. Its totient is φ = 326481408.

The previous prime is 1012002319. The next prime is 1012002391. The reversal of 1012002320 is 232002101.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2415071 + ... + 2415489.

It is an arithmetic number, because the mean of its divisors is an integer number (17811360).

Almost surely, 2^1012002320 is an apocalyptic number.

1012002320 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 1012002320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1424908800).

1012002320 is an abundant number, since it is smaller than the sum of its proper divisors (1837815280).

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

1012002320 is a wasteful number, since it uses less digits than its factorization.

1012002320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685 (or 679 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1012002320 is about 31811.9839054404. The cubic root of 1012002320 is about 1003.9848730281.

Adding to 1012002320 its reverse (232002101), we get a palindrome (1244004421).

The spelling of 1012002320 in words is "one billion, twelve million, two thousand, three hundred twenty".