13243957 has 8 divisors (see below), whose sum is σ = 13757216. Its totient is φ = 12740112.

The previous prime is 13243933. The next prime is 13243961. The reversal of 13243957 is 75934231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13243957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13243157) 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 7 ways as a sum of consecutive naturals, for example, 583 + ... + 5179.

It is an arithmetic number, because the mean of its divisors is an integer number (1719652).

Almost surely, 2^13243957 is an apocalyptic number.

It is an amenable number.

13243957 is a deficient number, since it is larger than the sum of its proper divisors (513259).

13243957 is an equidigital number, since it uses as much as digits as its factorization.

13243957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4707.

The product of its digits is 22680, while the sum is 34.

The square root of 13243957 is about 3639.2247800871. The cubic root of 13243957 is about 236.5951951963.

It can be divided in two parts, 132439 and 57, that added together give a square (132496 = 364²).

The spelling of 13243957 in words is "thirteen million, two hundred forty-three thousand, nine hundred fifty-seven".