400340234233 has 2 divisors, whose sum is σ = 400340234234. Its totient is φ = 400340234232.

The previous prime is 400340234191. The next prime is 400340234339. The reversal of 400340234233 is 332432043004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 400319413264 + 20820969 = 632708^2 + 4563^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400340234233 is a prime.

It is not a weakly prime, because it can be changed into another prime (400340234033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200170117116 + 200170117117.

It is an arithmetic number, because the mean of its divisors is an integer number (200170117117).

Almost surely, 2^400340234233 is an apocalyptic number.

It is an amenable number.

400340234233 is a deficient number, since it is larger than the sum of its proper divisors (1).

400340234233 is an equidigital number, since it uses as much as digits as its factorization.

400340234233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 28.

Adding to 400340234233 its reverse (332432043004), we get a palindrome (732772277237).

The spelling of 400340234233 in words is "four hundred billion, three hundred forty million, two hundred thirty-four thousand, two hundred thirty-three".