12132913 has 4 divisors (see below), whose sum is σ = 13066228. Its totient is φ = 11199600.

The previous prime is 12132907. The next prime is 12132931. The reversal of 12132913 is 31923121.

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 6315169 + 5817744 = 2513^2 + 2412^2 .

It is a cyclic number.

It is not a de Polignac number, because 12132913 - 2⁹ = 12132401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12132613) 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, 466638 + ... + 466663.

It is an arithmetic number, because the mean of its divisors is an integer number (3266557).

Almost surely, 2^12132913 is an apocalyptic number.

12132913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12132913 is a deficient number, since it is larger than the sum of its proper divisors (933315).

12132913 is an equidigital number, since it uses as much as digits as its factorization.

12132913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933314.

The product of its digits is 324, while the sum is 22.

The square root of 12132913 is about 3483.2331245554. The cubic root of 12132913 is about 229.7850101935.

The spelling of 12132913 in words is "twelve million, one hundred thirty-two thousand, nine hundred thirteen".