13242331 has 4 divisors (see below), whose sum is σ = 13250272. Its totient is φ = 13234392.

The previous prime is 13242329. The next prime is 13242347. The reversal of 13242331 is 13324231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13242331 - 2¹ = 13242329 is a prime.

It is a super-2 number, since 2×13242331² = 350718660627122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13242299 and 13242308.

It is not an unprimeable number, because it can be changed into a prime (13249331) 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, 396 + ... + 5161.

It is an arithmetic number, because the mean of its divisors is an integer number (3312568).

Almost surely, 2^13242331 is an apocalyptic number.

13242331 is a deficient number, since it is larger than the sum of its proper divisors (7941).

13242331 is an equidigital number, since it uses as much as digits as its factorization.

13242331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7940.

The product of its digits is 432, while the sum is 19.

The square root of 13242331 is about 3639.0013740036. The cubic root of 13242331 is about 236.5855123014.

Adding to 13242331 its reverse (13324231), we get a palindrome (26566562).

It can be divided in two parts, 1324 and 2331, that added together give a triangular number (3655 = T₈₅).

The spelling of 13242331 in words is "thirteen million, two hundred forty-two thousand, three hundred thirty-one".