1213404133 has 2 divisors, whose sum is σ = 1213404134. Its totient is φ = 1213404132.

The previous prime is 1213404113. The next prime is 1213404151. The reversal of 1213404133 is 3314043121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1054820484 + 158583649 = 32478^2 + 12593^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213404133 - 2⁹ = 1213403621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213404113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606702066 + 606702067.

It is an arithmetic number, because the mean of its divisors is an integer number (606702067).

Almost surely, 2^1213404133 is an apocalyptic number.

It is an amenable number.

1213404133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213404133 is an equidigital number, since it uses as much as digits as its factorization.

1213404133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1213404133 is about 34833.9508669344. The cubic root of 1213404133 is about 1066.6005991089.

Adding to 1213404133 its reverse (3314043121), we get a palindrome (4527447254).

The spelling of 1213404133 in words is "one billion, two hundred thirteen million, four hundred four thousand, one hundred thirty-three".