70128343 has 2 divisors, whose sum is σ = 70128344. Its totient is φ = 70128342.

The previous prime is 70128341. The next prime is 70128347. The reversal of 70128343 is 34382107.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70128343 - 2¹ = 70128341 is a prime.

Together with 70128341, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70128341) 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, 35064171 + 35064172.

It is an arithmetic number, because the mean of its divisors is an integer number (35064172).

Almost surely, 2^70128343 is an apocalyptic number.

70128343 is a deficient number, since it is larger than the sum of its proper divisors (1).

70128343 is an equidigital number, since it uses as much as digits as its factorization.

70128343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 70128343 is about 8374.2667141667. The cubic root of 70128343 is about 412.3802514969.

The spelling of 70128343 in words is "seventy million, one hundred twenty-eight thousand, three hundred forty-three".