12913261 has 8 divisors (see below), whose sum is σ = 13153280. Its totient is φ = 12675312.

The previous prime is 12913253. The next prime is 12913283. The reversal of 12913261 is 16231921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12913261 - 2³ = 12913253 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 (12913211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17251 + ... + 17983.

It is an arithmetic number, because the mean of its divisors is an integer number (1644160).

Almost surely, 2^12913261 is an apocalyptic number.

It is an amenable number.

12913261 is a deficient number, since it is larger than the sum of its proper divisors (240019).

12913261 is an equidigital number, since it uses as much as digits as its factorization.

12913261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035.

The product of its digits is 648, while the sum is 25.

The square root of 12913261 is about 3593.5026088762. The cubic root of 12913261 is about 234.6093464277.

The spelling of 12913261 in words is "twelve million, nine hundred thirteen thousand, two hundred sixty-one".