38740231 has 2 divisors, whose sum is σ = 38740232. Its totient is φ = 38740230.

The previous prime is 38740223. The next prime is 38740241. The reversal of 38740231 is 13204783.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38740231 - 2³ = 38740223 is a prime.

It is a super-2 number, since 2×38740231² = 3001610995866722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38740231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38740241) 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 as a sum of consecutive naturals, namely, 19370115 + 19370116.

It is an arithmetic number, because the mean of its divisors is an integer number (19370116).

Almost surely, 2^38740231 is an apocalyptic number.

38740231 is a deficient number, since it is larger than the sum of its proper divisors (1).

38740231 is an equidigital number, since it uses as much as digits as its factorization.

38740231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 38740231 is about 6224.1650845716. The cubic root of 38740231 is about 338.3665333939.

The spelling of 38740231 in words is "thirty-eight million, seven hundred forty thousand, two hundred thirty-one".