406223351 has 2 divisors, whose sum is σ = 406223352. Its totient is φ = 406223350.

The previous prime is 406223341. The next prime is 406223357. The reversal of 406223351 is 153322604.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406223351 is a prime.

It is a Chen prime.

It is equal to p_21650435 and since 406223351 and 21650435 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 406223351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406223357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203111675 + 203111676.

It is an arithmetic number, because the mean of its divisors is an integer number (203111676).

Almost surely, 2^406223351 is an apocalyptic number.

406223351 is a deficient number, since it is larger than the sum of its proper divisors (1).

406223351 is an equidigital number, since it uses as much as digits as its factorization.

406223351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 406223351 is about 20154.9832795763. The cubic root of 406223351 is about 740.6078223769.

Adding to 406223351 its reverse (153322604), we get a palindrome (559545955).

The spelling of 406223351 in words is "four hundred six million, two hundred twenty-three thousand, three hundred fifty-one".