406000031 has 2 divisors, whose sum is σ = 406000032. Its totient is φ = 406000030.

The previous prime is 406000027. The next prime is 406000057. The reversal of 406000031 is 130000604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 406000031 - 2² = 406000027 is a prime.

It is a super-2 number, since 2×406000031² = 329672050344001922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406000631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203000015 + 203000016.

It is an arithmetic number, because the mean of its divisors is an integer number (203000016).

Almost surely, 2^406000031 is an apocalyptic number.

406000031 is a deficient number, since it is larger than the sum of its proper divisors (1).

406000031 is an equidigital number, since it uses as much as digits as its factorization.

406000031 is an evil number, because the sum of its binary digits is even.

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

The square root of 406000031 is about 20149.4424488620. The cubic root of 406000031 is about 740.4720818984.

Adding to 406000031 its reverse (130000604), we get a palindrome (536000635).

The spelling of 406000031 in words is "four hundred six million, thirty-one", and thus it is an aban number.