1312202011993 has 4 divisors (see below), whose sum is σ = 1369254273408. Its totient is φ = 1255149750580.

The previous prime is 1312202011979. The next prime is 1312202012027. The reversal of 1312202011993 is 3991102022131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312202011993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312202011793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28526130673 + ... + 28526130718.

It is an arithmetic number, because the mean of its divisors is an integer number (342313568352).

Almost surely, 2^{1312202011993} is an apocalyptic number.

It is an amenable number.

1312202011993 is a deficient number, since it is larger than the sum of its proper divisors (57052261415).

1312202011993 is an equidigital number, since it uses as much as digits as its factorization.

1312202011993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57052261414.

The product of its (nonzero) digits is 5832, while the sum is 34.

The spelling of 1312202011993 in words is "one trillion, three hundred twelve billion, two hundred two million, eleven thousand, nine hundred ninety-three".