12132313 has 4 divisors (see below), whose sum is σ = 12146148. Its totient is φ = 12118480.

The previous prime is 12132311. The next prime is 12132319. The reversal of 12132313 is 31323121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31323121 = 83 ⋅377387.

It can be written as a sum of positive squares in 2 ways, for example, as 7414729 + 4717584 = 2723^2 + 2172^2 .

It is a cyclic number.

It is not a de Polignac number, because 12132313 - 2¹ = 12132311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12132311) 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, 5506 + ... + 7387.

It is an arithmetic number, because the mean of its divisors is an integer number (3036537).

Almost surely, 2^12132313 is an apocalyptic number.

It is an amenable number.

12132313 is a deficient number, since it is larger than the sum of its proper divisors (13835).

12132313 is an equidigital number, since it uses as much as digits as its factorization.

12132313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13834.

The product of its digits is 108, while the sum is 16.

The square root of 12132313 is about 3483.1469966110. The cubic root of 12132313 is about 229.7812223349.

Adding to 12132313 its reverse (31323121), we get a palindrome (43455434).

The spelling of 12132313 in words is "twelve million, one hundred thirty-two thousand, three hundred thirteen".