1320001312 has 48 divisors (see below), whose sum is σ = 3144718080. Its totient is φ = 532435968.

The previous prime is 1320001301. The next prime is 1320001313. The reversal of 1320001312 is 2131000231.

It is a junction number, because it is equal to n+sod(n) for n = 1320001292 and 1320001301.

It is not an unprimeable number, because it can be changed into a prime (1320001313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169512 + ... + 177127.

It is an arithmetic number, because the mean of its divisors is an integer number (65514960).

Almost surely, 2^1320001312 is an apocalyptic number.

It is an amenable number.

1320001312 is an abundant number, since it is smaller than the sum of its proper divisors (1824716768).

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

1320001312 is a wasteful number, since it uses less digits than its factorization.

1320001312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346673 (or 346665 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1320001312 is about 36331.8223049712. The cubic root of 1320001312 is about 1096.9616739241.

Adding to 1320001312 its reverse (2131000231), we get a palindrome (3451001543).

The spelling of 1320001312 in words is "one billion, three hundred twenty million, one thousand, three hundred twelve".