38440231 has 2 divisors, whose sum is σ = 38440232. Its totient is φ = 38440230.

The previous prime is 38440201. The next prime is 38440277. The reversal of 38440231 is 13204483.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38440231 - 2⁹ = 38439719 is a prime.

It is a super-2 number, since 2×38440231² = 2955302718666722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38440196 and 38440205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38440201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19220115 + 19220116.

It is an arithmetic number, because the mean of its divisors is an integer number (19220116).

Almost surely, 2^38440231 is an apocalyptic number.

38440231 is a deficient number, since it is larger than the sum of its proper divisors (1).

38440231 is an equidigital number, since it uses as much as digits as its factorization.

38440231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 38440231 is about 6200.0186290043. The cubic root of 38440231 is about 337.4908449277.

The spelling of 38440231 in words is "thirty-eight million, four hundred forty thousand, two hundred thirty-one".