1311202000243 has 8 divisors (see below), whose sum is σ = 1315802830608. Its totient is φ = 1306602025824.

The previous prime is 1311202000223. The next prime is 1311202000279. The reversal of 1311202000243 is 3420002021131.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311202000243 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 1311202000243.

It is not an unprimeable number, because it can be changed into a prime (1311202000223) 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, 2936296 + ... + 3353242.

It is an arithmetic number, because the mean of its divisors is an integer number (164475353826).

Almost surely, 2^{1311202000243} is an apocalyptic number.

1311202000243 is a deficient number, since it is larger than the sum of its proper divisors (4600830365).

1311202000243 is a wasteful number, since it uses less digits than its factorization.

1311202000243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427973.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1311202000243 its reverse (3420002021131), we get a palindrome (4731204021374).

The spelling of 1311202000243 in words is "one trillion, three hundred eleven billion, two hundred two million, two hundred forty-three", and thus it is an aban number.