43870313 has 2 divisors, whose sum is σ = 43870314. Its totient is φ = 43870312.

The previous prime is 43870291. The next prime is 43870331. The reversal of 43870313 is 31307834.

43870313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (43870331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42876304 + 994009 = 6548^2 + 997^2 .

It is a cyclic number.

It is not a de Polignac number, because 43870313 - 2⁶ = 43870249 is a prime.

It is not a weakly prime, because it can be changed into another prime (43870213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21935156 + 21935157.

It is an arithmetic number, because the mean of its divisors is an integer number (21935157).

Almost surely, 2^43870313 is an apocalyptic number.

It is an amenable number.

43870313 is a deficient number, since it is larger than the sum of its proper divisors (1).

43870313 is an equidigital number, since it uses as much as digits as its factorization.

43870313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 43870313 is about 6623.4668414660. The cubic root of 43870313 is about 352.6876435021.

The spelling of 43870313 in words is "forty-three million, eight hundred seventy thousand, three hundred thirteen".