43086361 has 2 divisors, whose sum is σ = 43086362. Its totient is φ = 43086360.

The previous prime is 43086359. The next prime is 43086371. The reversal of 43086361 is 16368034.

43086361 = T₅₃₅₈ + T₅₃₅₉ + T₅₃₆₀.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42968025 + 118336 = 6555^2 + 344^2 .

It is a cyclic number.

It is not a de Polignac number, because 43086361 - 2¹ = 43086359 is a prime.

Together with 43086359, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (43086331) 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 as a sum of consecutive naturals, namely, 21543180 + 21543181.

It is an arithmetic number, because the mean of its divisors is an integer number (21543181).

Almost surely, 2^43086361 is an apocalyptic number.

43086361 is the 5360-th centered triangular number.

It is an amenable number.

43086361 is a deficient number, since it is larger than the sum of its proper divisors (1).

43086361 is an equidigital number, since it uses as much as digits as its factorization.

43086361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 43086361 is about 6564.0201858312. The cubic root of 43086361 is about 350.5741894761.

The spelling of 43086361 in words is "forty-three million, eighty-six thousand, three hundred sixty-one".