70213315309 has 2 divisors, whose sum is σ = 70213315310. Its totient is φ = 70213315308.

The previous prime is 70213315247. The next prime is 70213315339. The reversal of 70213315309 is 90351331207.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70196912809 + 16402500 = 264947^2 + 4050^2 .

It is a cyclic number.

It is not a de Polignac number, because 70213315309 - 2¹⁵ = 70213282541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70213315339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35106657654 + 35106657655.

It is an arithmetic number, because the mean of its divisors is an integer number (35106657655).

Almost surely, 2^70213315309 is an apocalyptic number.

It is an amenable number.

70213315309 is a deficient number, since it is larger than the sum of its proper divisors (1).

70213315309 is an equidigital number, since it uses as much as digits as its factorization.

70213315309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17010, while the sum is 34.

The spelling of 70213315309 in words is "seventy billion, two hundred thirteen million, three hundred fifteen thousand, three hundred nine".