70000321 has 4 divisors (see below), whose sum is σ = 70042672. Its totient is φ = 69957972.

The previous prime is 70000319. The next prime is 70000331. The reversal of 70000321 is 12300007.

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: 12300007 = 151 ⋅81457.

It is a cyclic number.

It is not a de Polignac number, because 70000321 - 2¹ = 70000319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70000331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18591 + ... + 22036.

It is an arithmetic number, because the mean of its divisors is an integer number (17510668).

Almost surely, 2^70000321 is an apocalyptic number.

It is an amenable number.

70000321 is a deficient number, since it is larger than the sum of its proper divisors (42351).

70000321 is a wasteful number, since it uses less digits than its factorization.

70000321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42350.

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 70000321 is about 8366.6194487379. The cubic root of 70000321 is about 412.1291599478.

Adding to 70000321 its reverse (12300007), we get a palindrome (82300328).

The spelling of 70000321 in words is "seventy million, three hundred twenty-one", and thus it is an aban number.