38385431 has 4 divisors (see below), whose sum is σ = 43869072. Its totient is φ = 32901792.

The previous prime is 38385427. The next prime is 38385437. The reversal of 38385431 is 13458383.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 38385431 - 2² = 38385427 is a prime.

It is a super-2 number, since 2×38385431² = 2946882626111522, 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 = 38385391 and 38385400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38385437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2741810 + ... + 2741823.

It is an arithmetic number, because the mean of its divisors is an integer number (10967268).

Almost surely, 2^38385431 is an apocalyptic number.

38385431 is a deficient number, since it is larger than the sum of its proper divisors (5483641).

38385431 is an equidigital number, since it uses as much as digits as its factorization.

38385431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5483640.

The product of its digits is 34560, while the sum is 35.

The square root of 38385431 is about 6195.5977112785. The cubic root of 38385431 is about 337.3303941594.

The spelling of 38385431 in words is "thirty-eight million, three hundred eighty-five thousand, four hundred thirty-one".