12311141993 has 2 divisors, whose sum is σ = 12311141994. Its totient is φ = 12311141992.

The previous prime is 12311141981. The next prime is 12311142043. The reversal of 12311141993 is 39914111321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6585647104 + 5725494889 = 81152^2 + 75667^2 .

It is a cyclic number.

It is not a de Polignac number, because 12311141993 - 2¹⁴ = 12311125609 is a prime.

It is not a weakly prime, because it can be changed into another prime (12311141593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6155570996 + 6155570997.

It is an arithmetic number, because the mean of its divisors is an integer number (6155570997).

Almost surely, 2^12311141993 is an apocalyptic number.

It is an amenable number.

12311141993 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311141993 is an equidigital number, since it uses as much as digits as its factorization.

12311141993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 35.

The spelling of 12311141993 in words is "twelve billion, three hundred eleven million, one hundred forty-one thousand, nine hundred ninety-three".