12131335 has 4 divisors (see below), whose sum is σ = 14557608. Its totient is φ = 9705064.

The previous prime is 12131321. The next prime is 12131347. The reversal of 12131335 is 53313121.

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 12131335 - 2⁵ = 12131303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 1213129 + ... + 1213138.

It is an arithmetic number, because the mean of its divisors is an integer number (3639402).

Almost surely, 2^12131335 is an apocalyptic number.

12131335 is a deficient number, since it is larger than the sum of its proper divisors (2426273).

12131335 is an equidigital number, since it uses as much as digits as its factorization.

12131335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426272.

The product of its digits is 270, while the sum is 19.

The square root of 12131335 is about 3483.0066034965. The cubic root of 12131335 is about 229.7750478575.

Adding to 12131335 its reverse (53313121), we get a palindrome (65444456).

The spelling of 12131335 in words is "twelve million, one hundred thirty-one thousand, three hundred thirty-five".