408031 has 4 divisors (see below), whose sum is σ = 439432. Its totient is φ = 376632.

The previous prime is 408019. The next prime is 408041. The reversal of 408031 is 130804.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-408031 is a prime.

It is a super-2 number, since 2×408031² = 332978593922, 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 = 407996 and 408014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408011) 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, 15681 + ... + 15706.

It is an arithmetic number, because the mean of its divisors is an integer number (109858).

2⁴⁰⁸⁰³¹ is an apocalyptic number.

408031 is a deficient number, since it is larger than the sum of its proper divisors (31401).

408031 is a wasteful number, since it uses less digits than its factorization.

408031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31400.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 408031 is about 638.7730426372. The cubic root of 408031 is about 74.1704737907.

Adding to 408031 its reverse (130804), we get a palindrome (538835).

It can be divided in two parts, 40803 and 1, that added together give a palindrome (40804).

The spelling of 408031 in words is "four hundred eight thousand, thirty-one".