406612931 has 2 divisors, whose sum is σ = 406612932. Its totient is φ = 406612930.

The previous prime is 406612909. The next prime is 406612961. The reversal of 406612931 is 139216604.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406612931 is a prime.

It is a super-2 number, since 2×406612931² = 330668151312821522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (406612961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203306465 + 203306466.

It is an arithmetic number, because the mean of its divisors is an integer number (203306466).

Almost surely, 2^406612931 is an apocalyptic number.

406612931 is a deficient number, since it is larger than the sum of its proper divisors (1).

406612931 is an equidigital number, since it uses as much as digits as its factorization.

406612931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 406612931 is about 20164.6455708996. The cubic root of 406612931 is about 740.8445015411.

The spelling of 406612931 in words is "four hundred six million, six hundred twelve thousand, nine hundred thirty-one".