404313311 has 2 divisors, whose sum is σ = 404313312. Its totient is φ = 404313310.

The previous prime is 404313289. The next prime is 404313323. The reversal of 404313311 is 113313404.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404313311 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404310311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202156655 + 202156656.

It is an arithmetic number, because the mean of its divisors is an integer number (202156656).

Almost surely, 2^404313311 is an apocalyptic number.

404313311 is a deficient number, since it is larger than the sum of its proper divisors (1).

404313311 is an equidigital number, since it uses as much as digits as its factorization.

404313311 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 20.

The square root of 404313311 is about 20107.5436341687. The cubic root of 404313311 is about 739.4452324860.

Adding to 404313311 its reverse (113313404), we get a palindrome (517626715).

The spelling of 404313311 in words is "four hundred four million, three hundred thirteen thousand, three hundred eleven".