43291 has 2 divisors, whose sum is σ = 43292. Its totient is φ = 43290.

The previous prime is 43283. The next prime is 43313. The reversal of 43291 is 19234.

43291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43291 - 2³ = 43283 is a prime.

It is a super-2 number, since 2×43291² = 3748221362, which contains 22 as substring.

It is a Chen prime.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (43201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21645 + 21646.

It is an arithmetic number, because the mean of its divisors is an integer number (21646).

2⁴³²⁹¹ is an apocalyptic number.

43291 is a deficient number, since it is larger than the sum of its proper divisors (1).

43291 is an equidigital number, since it uses as much as digits as its factorization.

43291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 19.

The square root of 43291 is about 208.0648937231. The cubic root of 43291 is about 35.1128331361.

The spelling of 43291 in words is "forty-three thousand, two hundred ninety-one".