38478311 has 4 divisors (see below), whose sum is σ = 38572800. Its totient is φ = 38383824.

The previous prime is 38478299. The next prime is 38478313. The reversal of 38478311 is 11387483.

38478311 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: 11387483 = 229 ⋅49727.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38478311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38478313) 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, 46631 + ... + 47448.

It is an arithmetic number, because the mean of its divisors is an integer number (9643200).

Almost surely, 2^38478311 is an apocalyptic number.

38478311 is a deficient number, since it is larger than the sum of its proper divisors (94489).

38478311 is an equidigital number, since it uses as much as digits as its factorization.

38478311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94488.

The product of its digits is 16128, while the sum is 35.

The square root of 38478311 is about 6203.0888273505. The cubic root of 38478311 is about 337.6022508657.

The spelling of 38478311 in words is "thirty-eight million, four hundred seventy-eight thousand, three hundred eleven".