13042331 has 4 divisors (see below), whose sum is σ = 13083792. Its totient is φ = 13000872.

The previous prime is 13042321. The next prime is 13042333. The reversal of 13042331 is 13324031.

It is a happy number.

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 13042331 - 2¹⁰ = 13041307 is a prime.

It is a super-2 number, since 2×13042331² = 340204795827122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13042333) 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, 20255 + ... + 20888.

It is an arithmetic number, because the mean of its divisors is an integer number (3270948).

Almost surely, 2^13042331 is an apocalyptic number.

13042331 is a deficient number, since it is larger than the sum of its proper divisors (41461).

13042331 is an equidigital number, since it uses as much as digits as its factorization.

13042331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41460.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 13042331 is about 3611.4167580051. The cubic root of 13042331 is about 235.3884085364.

Adding to 13042331 its reverse (13324031), we get a palindrome (26366362).

The spelling of 13042331 in words is "thirteen million, forty-two thousand, three hundred thirty-one".