1312012311203 has 32 divisors (see below), whose sum is σ = 1531614113280. Its totient is φ = 1111363200000.

The previous prime is 1312012311173. The next prime is 1312012311229. The reversal of 1312012311203 is 3021132102131.

It is a happy number.

It is not a de Polignac number, because 1312012311203 - 2¹² = 1312012307107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312012311293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2981651 + ... + 3393267.

It is an arithmetic number, because the mean of its divisors is an integer number (47862941040).

Almost surely, 2^{1312012311203} is an apocalyptic number.

1312012311203 is a deficient number, since it is larger than the sum of its proper divisors (219601802077).

1312012311203 is a wasteful number, since it uses less digits than its factorization.

1312012311203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411899.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1312012311203 its reverse (3021132102131), we get a palindrome (4333144413334).

The spelling of 1312012311203 in words is "one trillion, three hundred twelve billion, twelve million, three hundred eleven thousand, two hundred three".