400331340220213 has 2 divisors, whose sum is σ = 400331340220214. Its totient is φ = 400331340220212.

The previous prime is 400331340220199. The next prime is 400331340220241. The reversal of 400331340220213 is 312022043133004.

It is a happy number.

It is an a-pointer prime, because the next prime (400331340220241) can be obtained adding 400331340220213 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 372071037674449 + 28260302545764 = 19289143^2 + 5316042^2 .

It is a cyclic number.

It is not a de Polignac number, because 400331340220213 - 2³³ = 400322750285621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400331340220813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200165670110106 + 200165670110107.

It is an arithmetic number, because the mean of its divisors is an integer number (200165670110107).

Almost surely, 2^{400331340220213} is an apocalyptic number.

It is an amenable number.

400331340220213 is a deficient number, since it is larger than the sum of its proper divisors (1).

400331340220213 is an equidigital number, since it uses as much as digits as its factorization.

400331340220213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 400331340220213 its reverse (312022043133004), we get a palindrome (712353383353217).

The spelling of 400331340220213 in words is "four hundred trillion, three hundred thirty-one billion, three hundred forty million, two hundred twenty thousand, two hundred thirteen".