38908231 has 2 divisors, whose sum is σ = 38908232. Its totient is φ = 38908230.

The previous prime is 38908229. The next prime is 38908237. The reversal of 38908231 is 13280983.

It is a weak prime.

It is an emirp because it is prime and its reverse (13280983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38908231 - 2¹ = 38908229 is a prime.

It is a super-2 number, since 2×38908231² = 3027700879098722, which contains 22 as substring.

Together with 38908229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38908237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19454115 + 19454116.

It is an arithmetic number, because the mean of its divisors is an integer number (19454116).

Almost surely, 2^38908231 is an apocalyptic number.

38908231 is a deficient number, since it is larger than the sum of its proper divisors (1).

38908231 is an equidigital number, since it uses as much as digits as its factorization.

38908231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 38908231 is about 6237.6462708300. The cubic root of 38908231 is about 338.8549455846.

It can be divided in two parts, 3890 and 8231, that added together give a palindrome (12121).

The spelling of 38908231 in words is "thirty-eight million, nine hundred eight thousand, two hundred thirty-one".