1312021200233 has 8 divisors (see below), whose sum is σ = 1317854457480. Its totient is φ = 1306195833600.

The previous prime is 1312021200229. The next prime is 1312021200241. The reversal of 1312021200233 is 3320021202131.

It can be written as a sum of positive squares in 4 ways, for example, as 141442183744 + 1170579016489 = 376088^2 + 1081933^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312021200233 - 2² = 1312021200229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1312021200283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1639238 + ... + 2304591.

It is an arithmetic number, because the mean of its divisors is an integer number (164731807185).

Almost surely, 2^{1312021200233} is an apocalyptic number.

It is an amenable number.

1312021200233 is a deficient number, since it is larger than the sum of its proper divisors (5833257247).

1312021200233 is a wasteful number, since it uses less digits than its factorization.

1312021200233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3945307.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1312021200233 its reverse (3320021202131), we get a palindrome (4632042402364).

The spelling of 1312021200233 in words is "one trillion, three hundred twelve billion, twenty-one million, two hundred thousand, two hundred thirty-three".