408131 has 2 divisors, whose sum is σ = 408132. Its totient is φ = 408130.

The previous prime is 408127. The next prime is 408137. The reversal of 408131 is 131804.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 408131 - 2² = 408127 is a prime.

It is a super-2 number, since 2×408131² = 333141826322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (408137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204065 + 204066.

It is an arithmetic number, because the mean of its divisors is an integer number (204066).

2⁴⁰⁸¹³¹ is an apocalyptic number.

408131 is a deficient number, since it is larger than the sum of its proper divisors (1).

408131 is an equidigital number, since it uses as much as digits as its factorization.

408131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 408131 is about 638.8513129047. The cubic root of 408131 is about 74.1765325147.

Adding to 408131 its reverse (131804), we get a palindrome (539935).

The spelling of 408131 in words is "four hundred eight thousand, one hundred thirty-one".