1000215312 has 20 divisors (see below), whose sum is σ = 2583889680. Its totient is φ = 333405088.

The previous prime is 1000215301. The next prime is 1000215331. The reversal of 1000215312 is 2135120001.

It is a junction number, because it is equal to n+sod(n) for n = 1000215291 and 1000215300.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10418862 + ... + 10418957.

It is an arithmetic number, because the mean of its divisors is an integer number (129194484).

Almost surely, 2^1000215312 is an apocalyptic number.

1000215312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1000215312 is an abundant number, since it is smaller than the sum of its proper divisors (1583674368).

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

1000215312 is a wasteful number, since it uses less digits than its factorization.

1000215312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20837830 (or 20837824 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1000215312 is about 31626.1808000903. The cubic root of 1000215312 is about 1000.0717655163.

Adding to 1000215312 its reverse (2135120001), we get a palindrome (3135335313).

The spelling of 1000215312 in words is "one billion, two hundred fifteen thousand, three hundred twelve".