12961183 has 4 divisors (see below), whose sum is σ = 12976840. Its totient is φ = 12945528.

The previous prime is 12961181. The next prime is 12961187. The reversal of 12961183 is 38116921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12961183 - 2¹ = 12961181 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 (12961181) 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, 6513 + ... + 8266.

It is an arithmetic number, because the mean of its divisors is an integer number (3244210).

Almost surely, 2^12961183 is an apocalyptic number.

12961183 is a deficient number, since it is larger than the sum of its proper divisors (15657).

12961183 is an equidigital number, since it uses as much as digits as its factorization.

12961183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15656.

The product of its digits is 2592, while the sum is 31.

The square root of 12961183 is about 3600.1643018062. The cubic root of 12961183 is about 234.8992053027.

The spelling of 12961183 in words is "twelve million, nine hundred sixty-one thousand, one hundred eighty-three".