1320012312 has 16 divisors (see below), whose sum is σ = 3300030840. Its totient is φ = 440004096.

The previous prime is 1320012301. The next prime is 1320012313. The reversal of 1320012312 is 2132100231.

It is a junction number, because it is equal to n+sod(n) for n = 1320012291 and 1320012300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320012313) 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, 27500233 + ... + 27500280.

Almost surely, 2^1320012312 is an apocalyptic number.

1320012312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1320012312 is an abundant number, since it is smaller than the sum of its proper divisors (1980018528).

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

1320012312 is a wasteful number, since it uses less digits than its factorization.

1320012312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55000522 (or 55000518 counting only the distinct ones).

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

The square root of 1320012312 is about 36331.9736870983. The cubic root of 1320012312 is about 1096.9647210284.

Adding to 1320012312 its reverse (2132100231), we get a palindrome (3452112543).

The spelling of 1320012312 in words is "one billion, three hundred twenty million, twelve thousand, three hundred twelve".