12913273 has 4 divisors (see below), whose sum is σ = 13125028. Its totient is φ = 12701520.

The previous prime is 12913253. The next prime is 12913283. The reversal of 12913273 is 37231921.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1710864 + 11202409 = 1308^2 + 3347^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12913273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12913253) 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 3 ways as a sum of consecutive naturals, for example, 105786 + ... + 105907.

It is an arithmetic number, because the mean of its divisors is an integer number (3281257).

Almost surely, 2^12913273 is an apocalyptic number.

It is an amenable number.

12913273 is a deficient number, since it is larger than the sum of its proper divisors (211755).

12913273 is an equidigital number, since it uses as much as digits as its factorization.

12913273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211754.

The product of its digits is 2268, while the sum is 28.

The square root of 12913273 is about 3593.5042785560. The cubic root of 12913273 is about 234.6094191001.

The spelling of 12913273 in words is "twelve million, nine hundred thirteen thousand, two hundred seventy-three".