1002231312 has 20 divisors (see below), whose sum is σ = 2589097680. Its totient is φ = 334077088.

The previous prime is 1002231301. The next prime is 1002231313. The reversal of 1002231312 is 2131322001.

It is a junction number, because it is equal to n+sod(n) for n = 1002231291 and 1002231300.

It is not an unprimeable number, because it can be changed into a prime (1002231313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10439862 + ... + 10439957.

It is an arithmetic number, because the mean of its divisors is an integer number (129454884).

Almost surely, 2^1002231312 is an apocalyptic number.

1002231312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1002231312 is an abundant number, since it is smaller than the sum of its proper divisors (1586866368).

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

1002231312 is a wasteful number, since it uses less digits than its factorization.

1002231312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20879830 (or 20879824 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1002231312 is about 31658.0370838118. The cubic root of 1002231312 is about 1000.7432181566.

Adding to 1002231312 its reverse (2131322001), we get a palindrome (3133553313).

The spelling of 1002231312 in words is "one billion, two million, two hundred thirty-one thousand, three hundred twelve".