1312012113311 has 4 divisors (see below), whose sum is σ = 1324048921800. Its totient is φ = 1299975304824.

The previous prime is 1312012113283. The next prime is 1312012113323. The reversal of 1312012113311 is 1133112102131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312012113311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312012113331) 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 3 ways as a sum of consecutive naturals, for example, 6018404081 + ... + 6018404298.

It is an arithmetic number, because the mean of its divisors is an integer number (331012230450).

Almost surely, 2^{1312012113311} is an apocalyptic number.

1312012113311 is a deficient number, since it is larger than the sum of its proper divisors (12036808489).

1312012113311 is a wasteful number, since it uses less digits than its factorization.

1312012113311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12036808488.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 1312012113311 its reverse (1133112102131), we get a palindrome (2445124215442).

The spelling of 1312012113311 in words is "one trillion, three hundred twelve billion, twelve million, one hundred thirteen thousand, three hundred eleven".