12012313 has 4 divisors (see below), whose sum is σ = 12644560. Its totient is φ = 11380068.

The previous prime is 12012289. The next prime is 12012331. The reversal of 12012313 is 31321021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31321021 = 17 ⋅1842413.

It is a cyclic number.

It is not a de Polignac number, because 12012313 - 2⁵ = 12012281 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12012293 and 12012302.

It is not an unprimeable number, because it can be changed into a prime (12012113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316095 + ... + 316132.

It is an arithmetic number, because the mean of its divisors is an integer number (3161140).

Almost surely, 2^12012313 is an apocalyptic number.

It is an amenable number.

12012313 is a deficient number, since it is larger than the sum of its proper divisors (632247).

12012313 is an equidigital number, since it uses as much as digits as its factorization.

12012313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632246.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 12012313 is about 3465.8783879415. The cubic root of 12012313 is about 229.0211265572.

Adding to 12012313 its reverse (31321021), we get a palindrome (43333334).

The spelling of 12012313 in words is "twelve million, twelve thousand, three hundred thirteen".