1012320312 has 16 divisors (see below), whose sum is σ = 2530800840. Its totient is φ = 337440096.

The previous prime is 1012320311. The next prime is 1012320317. The reversal of 1012320312 is 2130232101.

It is a junction number, because it is equal to n+sod(n) for n = 1012320291 and 1012320300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012320311) 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, 21089983 + ... + 21090030.

Almost surely, 2^1012320312 is an apocalyptic number.

1012320312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1012320312 is an abundant number, since it is smaller than the sum of its proper divisors (1518480528).

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

1012320312 is a wasteful number, since it uses less digits than its factorization.

1012320312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42180022 (or 42180018 counting only the distinct ones).

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

The square root of 1012320312 is about 31816.9815035933. The cubic root of 1012320312 is about 1004.0900196000.

Adding to 1012320312 its reverse (2130232101), we get a palindrome (3142552413).

The spelling of 1012320312 in words is "one billion, twelve million, three hundred twenty thousand, three hundred twelve".