1312120333 has 16 divisors (see below), whose sum is σ = 1399129200. Its totient is φ = 1226244096.

The previous prime is 1312120331. The next prime is 1312120379. The reversal of 1312120333 is 3330212131.

It can be written as a sum of positive squares in 8 ways, for example, as 6165289 + 1305955044 = 2483^2 + 36138^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312120333 - 2¹ = 1312120331 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312120333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312120331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2922093 + ... + 2922541.

It is an arithmetic number, because the mean of its divisors is an integer number (87445575).

Almost surely, 2^1312120333 is an apocalyptic number.

It is an amenable number.

1312120333 is a deficient number, since it is larger than the sum of its proper divisors (87008867).

1312120333 is a wasteful number, since it uses less digits than its factorization.

1312120333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1312120333 is about 36223.2015840676. The cubic root of 1312120333 is about 1094.7742027975.

Adding to 1312120333 its reverse (3330212131), we get a palindrome (4642332464).

The spelling of 1312120333 in words is "one billion, three hundred twelve million, one hundred twenty thousand, three hundred thirty-three".