70313909 has 2 divisors, whose sum is σ = 70313910. Its totient is φ = 70313908.

The previous prime is 70313879. The next prime is 70313917. The reversal of 70313909 is 90931307.

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., 66994225 + 3319684 = 8185^2 + 1822^2 .

It is an emirp because it is prime and its reverse (90931307) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70313909 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70313959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35156954 + 35156955.

It is an arithmetic number, because the mean of its divisors is an integer number (35156955).

Almost surely, 2^70313909 is an apocalyptic number.

It is an amenable number.

70313909 is a deficient number, since it is larger than the sum of its proper divisors (1).

70313909 is an equidigital number, since it uses as much as digits as its factorization.

70313909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 70313909 is about 8385.3389317308. The cubic root of 70313909 is about 412.7436630804.

The spelling of 70313909 in words is "seventy million, three hundred thirteen thousand, nine hundred nine".