38631 has 8 divisors (see below), whose sum is σ = 52480. Its totient is φ = 25272.

The previous prime is 38629. The next prime is 38639. The reversal of 38631 is 13683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38631 - 2¹ = 38629 is a prime.

It is a super-2 number, since 2×38631² = 2984708322, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 8 and base 13.

It is a junction number, because it is equal to n+sod(n) for n = 38598 and 38607.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 38631.

It is not an unprimeable number, because it can be changed into a prime (38639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156 + ... + 318.

It is an arithmetic number, because the mean of its divisors is an integer number (6560).

2³⁸⁶³¹ is an apocalyptic number.

38631 is a deficient number, since it is larger than the sum of its proper divisors (13849).

38631 is a wasteful number, since it uses less digits than its factorization.

38631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245.

The product of its digits is 432, while the sum is 21.

The square root of 38631 is about 196.5477041331. The cubic root of 38631 is about 33.8048217390.

The spelling of 38631 in words is "thirty-eight thousand, six hundred thirty-one".