12011320313 has 4 divisors (see below), whose sum is σ = 12012398580. Its totient is φ = 12010242048.

The previous prime is 12011320303. The next prime is 12011320319. The reversal of 12011320313 is 31302311021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31302311021 = 17 ⋅1841312413.

It can be written as a sum of positive squares in 2 ways, for example, as 10797703744 + 1213616569 = 103912^2 + 34837^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011320313 - 2⁴ = 12011320297 is a prime.

It is a super-2 number, since 2×12011320313² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011320291 and 12011320300.

It is not an unprimeable number, because it can be changed into a prime (12011320319) 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, 522248 + ... + 544761.

It is an arithmetic number, because the mean of its divisors is an integer number (3003099645).

Almost surely, 2^12011320313 is an apocalyptic number.

It is an amenable number.

12011320313 is a deficient number, since it is larger than the sum of its proper divisors (1078267).

12011320313 is a wasteful number, since it uses less digits than its factorization.

12011320313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078266.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 12011320313 its reverse (31302311021), we get a palindrome (43313631334).

The spelling of 12011320313 in words is "twelve billion, eleven million, three hundred twenty thousand, three hundred thirteen".