406606331 has 2 divisors, whose sum is σ = 406606332. Its totient is φ = 406606330.

The previous prime is 406606267. The next prime is 406606349. The reversal of 406606331 is 133606604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 406606331 - 2⁶ = 406606267 is a prime.

It is a super-2 number, since 2×406606331² = 330657416818563122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 406606294 and 406606303.

It is not a weakly prime, because it can be changed into another prime (406606931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203303165 + 203303166.

It is an arithmetic number, because the mean of its divisors is an integer number (203303166).

Almost surely, 2^406606331 is an apocalyptic number.

406606331 is a deficient number, since it is larger than the sum of its proper divisors (1).

406606331 is an equidigital number, since it uses as much as digits as its factorization.

406606331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 406606331 is about 20164.4819174706. The cubic root of 406606331 is about 740.8404931425.

The spelling of 406606331 in words is "four hundred six million, six hundred six thousand, three hundred thirty-one".