70023213 has 12 divisors (see below), whose sum is σ = 108925180. Its totient is φ = 43091136.

The previous prime is 70023169. The next prime is 70023223. The reversal of 70023213 is 31232007.

It can be written as a sum of positive squares in 2 ways, for example, as 22867524 + 47155689 = 4782^2 + 6867^2 .

It is not a de Polignac number, because 70023213 - 2²⁰ = 68974637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70023223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 299128 + ... + 299361.

Almost surely, 2^70023213 is an apocalyptic number.

It is an amenable number.

70023213 is a deficient number, since it is larger than the sum of its proper divisors (38901967).

70023213 is a wasteful number, since it uses less digits than its factorization.

70023213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598508 (or 598505 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 70023213 is about 8367.9873924379. The cubic root of 70023213 is about 412.1740808488.

The spelling of 70023213 in words is "seventy million, twenty-three thousand, two hundred thirteen".