47347213 has 4 divisors (see below), whose sum is σ = 47386080. Its totient is φ = 47308348.

The previous prime is 47347211. The next prime is 47347217. The reversal of 47347213 is 31274374.

47347213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 31274374 = 2 ⋅15637187.

It is a cyclic number.

It is not a de Polignac number, because 47347213 - 2¹ = 47347211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47347211) 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, 17545 + ... + 20062.

It is an arithmetic number, because the mean of its divisors is an integer number (11846520).

Almost surely, 2^47347213 is an apocalyptic number.

It is an amenable number.

47347213 is a deficient number, since it is larger than the sum of its proper divisors (38867).

47347213 is a wasteful number, since it uses less digits than its factorization.

47347213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38866.

The product of its digits is 14112, while the sum is 31.

The square root of 47347213 is about 6880.9311143188. The cubic root of 47347213 is about 361.7691032887.

The spelling of 47347213 in words is "forty-seven million, three hundred forty-seven thousand, two hundred thirteen".