38161231 has 2 divisors, whose sum is σ = 38161232. Its totient is φ = 38161230.

The previous prime is 38161183. The next prime is 38161241. The reversal of 38161231 is 13216183.

38161231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38161231 - 2⁷ = 38161103 is a prime.

It is a super-2 number, since 2×38161231² = 2912559102870722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38161196 and 38161205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38161241) 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 as a sum of consecutive naturals, namely, 19080615 + 19080616.

It is an arithmetic number, because the mean of its divisors is an integer number (19080616).

Almost surely, 2^38161231 is an apocalyptic number.

38161231 is a deficient number, since it is larger than the sum of its proper divisors (1).

38161231 is an equidigital number, since it uses as much as digits as its factorization.

38161231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 25.

The square root of 38161231 is about 6177.4777215300. The cubic root of 38161231 is about 336.6723563177.

The spelling of 38161231 in words is "thirty-eight million, one hundred sixty-one thousand, two hundred thirty-one".