38317213 has 4 divisors (see below), whose sum is σ = 41800608. Its totient is φ = 34833820.

The previous prime is 38317187. The next prime is 38317219. The reversal of 38317213 is 31271383.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38317213 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 (38317219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1741681 + ... + 1741702.

It is an arithmetic number, because the mean of its divisors is an integer number (10450152).

Almost surely, 2^38317213 is an apocalyptic number.

It is an amenable number.

38317213 is a deficient number, since it is larger than the sum of its proper divisors (3483395).

38317213 is a wasteful number, since it uses less digits than its factorization.

38317213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3483394.

The product of its digits is 3024, while the sum is 28.

The square root of 38317213 is about 6190.0899024166. The cubic root of 38317213 is about 337.1304428593.

Adding to 38317213 its reverse (31271383), we get a palindrome (69588596).

The spelling of 38317213 in words is "thirty-eight million, three hundred seventeen thousand, two hundred thirteen".