12107813 has 4 divisors (see below), whose sum is σ = 12165408. Its totient is φ = 12050220.

The previous prime is 12107789. The next prime is 12107839. The reversal of 12107813 is 31870121.

It is a happy number.

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 not a de Polignac number, because 12107813 - 2⁶ = 12107749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12107863) 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, 28481 + ... + 28902.

It is an arithmetic number, because the mean of its divisors is an integer number (3041352).

Almost surely, 2^12107813 is an apocalyptic number.

It is an amenable number.

12107813 is a deficient number, since it is larger than the sum of its proper divisors (57595).

12107813 is an equidigital number, since it uses as much as digits as its factorization.

12107813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57594.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 12107813 is about 3479.6282847454. The cubic root of 12107813 is about 229.6264446569.

Adding to 12107813 its reverse (31870121), we get a palindrome (43977934).

The spelling of 12107813 in words is "twelve million, one hundred seven thousand, eight hundred thirteen".