70312871 has 2 divisors, whose sum is σ = 70312872. Its totient is φ = 70312870.

The previous prime is 70312843. The next prime is 70312873. The reversal of 70312871 is 17821307.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70312871 - 2⁶ = 70312807 is a prime.

It is a Sophie Germain prime.

Together with 70312873, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70312873) 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, 35156435 + 35156436.

It is an arithmetic number, because the mean of its divisors is an integer number (35156436).

Almost surely, 2^70312871 is an apocalyptic number.

70312871 is a deficient number, since it is larger than the sum of its proper divisors (1).

70312871 is an equidigital number, since it uses as much as digits as its factorization.

70312871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 70312871 is about 8385.2770377609. The cubic root of 70312871 is about 412.7416320454.

The spelling of 70312871 in words is "seventy million, three hundred twelve thousand, eight hundred seventy-one".