400340343211 has 2 divisors, whose sum is σ = 400340343212. Its totient is φ = 400340343210.

The previous prime is 400340343191. The next prime is 400340343241. The reversal of 400340343211 is 112343043004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400340343211 - 2¹³ = 400340335019 is a prime.

It is not a weakly prime, because it can be changed into another prime (400340343241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200170171605 + 200170171606.

It is an arithmetic number, because the mean of its divisors is an integer number (200170171606).

Almost surely, 2^400340343211 is an apocalyptic number.

400340343211 is a deficient number, since it is larger than the sum of its proper divisors (1).

400340343211 is an equidigital number, since it uses as much as digits as its factorization.

400340343211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 400340343211 its reverse (112343043004), we get a palindrome (512683386215).

The spelling of 400340343211 in words is "four hundred billion, three hundred forty million, three hundred forty-three thousand, two hundred eleven".