1234400213 has 2 divisors, whose sum is σ = 1234400214. Its totient is φ = 1234400212.

The previous prime is 1234400197. The next prime is 1234400239. The reversal of 1234400213 is 3120044321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 943288369 + 291111844 = 30713^2 + 17062^2 .

It is a cyclic number.

It is not a de Polignac number, because 1234400213 - 2⁴ = 1234400197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1234000213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617200106 + 617200107.

It is an arithmetic number, because the mean of its divisors is an integer number (617200107).

Almost surely, 2^1234400213 is an apocalyptic number.

It is an amenable number.

1234400213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234400213 is an equidigital number, since it uses as much as digits as its factorization.

1234400213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1234400213 is about 35134.0321198692. The cubic root of 1234400213 is about 1072.7174103328.

Adding to 1234400213 its reverse (3120044321), we get a palindrome (4354444534).

The spelling of 1234400213 in words is "one billion, two hundred thirty-four million, four hundred thousand, two hundred thirteen".