38204431 has 4 divisors (see below), whose sum is σ = 39436864. Its totient is φ = 36972000.

The previous prime is 38204401. The next prime is 38204443. The reversal of 38204431 is 13440283.

38204431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13440283 = 127 ⋅105829.

It is a cyclic number.

It is not a de Polignac number, because 38204431 - 2⁵ = 38204399 is a prime.

It is a super-2 number, since 2×38204431² = 2919157096067522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38204396 and 38204405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38204401) 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 in 3 ways as a sum of consecutive naturals, for example, 616170 + ... + 616231.

It is an arithmetic number, because the mean of its divisors is an integer number (9859216).

Almost surely, 2^38204431 is an apocalyptic number.

38204431 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

38204431 is a deficient number, since it is larger than the sum of its proper divisors (1232433).

38204431 is a wasteful number, since it uses less digits than its factorization.

38204431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232432.

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

The square root of 38204431 is about 6180.9733052328. The cubic root of 38204431 is about 336.7993504829.

The spelling of 38204431 in words is "thirty-eight million, two hundred four thousand, four hundred thirty-one".