12961307 has 4 divisors (see below), whose sum is σ = 12981240. Its totient is φ = 12941376.

The previous prime is 12961303. The next prime is 12961313. The reversal of 12961307 is 70316921.

12961307 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12961307 - 2² = 12961303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12961307.

It is not an unprimeable number, because it can be changed into a prime (12961303) 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, 8957 + ... + 10302.

It is an arithmetic number, because the mean of its divisors is an integer number (3245310).

Almost surely, 2^12961307 is an apocalyptic number.

12961307 is a deficient number, since it is larger than the sum of its proper divisors (19933).

12961307 is an equidigital number, since it uses as much as digits as its factorization.

12961307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19932.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 12961307 is about 3600.1815232013. The cubic root of 12961307 is about 234.8999543961.

The spelling of 12961307 in words is "twelve million, nine hundred sixty-one thousand, three hundred seven".