71070313 has 4 divisors (see below), whose sum is σ = 71090560. Its totient is φ = 71050068.

The previous prime is 71070287. The next prime is 71070331. The reversal of 71070313 is 31307017.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31307017 = 7 ⋅4472431.

It is a cyclic number.

It is not a de Polignac number, because 71070313 - 2⁵ = 71070281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71070413) 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 in 3 ways as a sum of consecutive naturals, for example, 3345 + ... + 12382.

It is an arithmetic number, because the mean of its divisors is an integer number (17772640).

Almost surely, 2^71070313 is an apocalyptic number.

It is an amenable number.

71070313 is a deficient number, since it is larger than the sum of its proper divisors (20247).

71070313 is a wasteful number, since it uses less digits than its factorization.

71070313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20246.

The product of its (nonzero) digits is 441, while the sum is 22.

The square root of 71070313 is about 8430.3210496398. The cubic root of 71070313 is about 414.2184215429.

The spelling of 71070313 in words is "seventy-one million, seventy thousand, three hundred thirteen".