38113531 has 4 divisors (see below), whose sum is σ = 38506552. Its totient is φ = 37720512.

The previous prime is 38113529. The next prime is 38113547. The reversal of 38113531 is 13531183.

38113531 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.

It is a cyclic number.

It is not a de Polignac number, because 38113531 - 2¹ = 38113529 is a prime.

It is a super-2 number, since 2×38113531² = 2905282490575922, 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 = 38113496 and 38113505.

It is not an unprimeable number, because it can be changed into a prime (38113571) 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, 196365 + ... + 196558.

It is an arithmetic number, because the mean of its divisors is an integer number (9626638).

Almost surely, 2^38113531 is an apocalyptic number.

38113531 is a deficient number, since it is larger than the sum of its proper divisors (393021).

38113531 is an equidigital number, since it uses as much as digits as its factorization.

38113531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393020.

The product of its digits is 1080, while the sum is 25.

The square root of 38113531 is about 6173.6157152839. The cubic root of 38113531 is about 336.5320222075.

It can be divided in two parts, 38 and 113531, that added together give a square (113569 = 337²).

The spelling of 38113531 in words is "thirty-eight million, one hundred thirteen thousand, five hundred thirty-one".