406031 has 4 divisors (see below), whose sum is σ = 408552. Its totient is φ = 403512.

The previous prime is 406027. The next prime is 406037. The reversal of 406031 is 130604.

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 406031 - 2² = 406027 is a prime.

It is a super-2 number, since 2×406031² = 329722345922, 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 = 405997 and 406015.

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 406031.

It is not an unprimeable number, because it can be changed into a prime (406037) 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, 1001 + ... + 1346.

It is an arithmetic number, because the mean of its divisors is an integer number (102138).

2⁴⁰⁶⁰³¹ is an apocalyptic number.

406031 is a deficient number, since it is larger than the sum of its proper divisors (2521).

406031 is a wasteful number, since it uses less digits than its factorization.

406031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 406031 is about 637.2056183054. The cubic root of 406031 is about 74.0490908742.

Adding to 406031 its reverse (130604), we get a palindrome (536635).

It can be divided in two parts, 40603 and 1, that added together give a palindrome (40604).

The spelling of 406031 in words is "four hundred six thousand, thirty-one".