406302031 has 2 divisors, whose sum is σ = 406302032. Its totient is φ = 406302030.

The previous prime is 406302011. The next prime is 406302037. The reversal of 406302031 is 130203604.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406302031 is a prime.

It is a super-2 number, since 2×406302031² = 330162680789449922, 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 (406302037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203151015 + 203151016.

It is an arithmetic number, because the mean of its divisors is an integer number (203151016).

Almost surely, 2^406302031 is an apocalyptic number.

406302031 is a deficient number, since it is larger than the sum of its proper divisors (1).

406302031 is an equidigital number, since it uses as much as digits as its factorization.

406302031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 406302031 is about 20156.9350596761. The cubic root of 406302031 is about 740.6556345486.

Adding to 406302031 its reverse (130203604), we get a palindrome (536505635).

The spelling of 406302031 in words is "four hundred six million, three hundred two thousand, thirty-one".