1204211311 has 2 divisors, whose sum is σ = 1204211312. Its totient is φ = 1204211310.

The previous prime is 1204211293. The next prime is 1204211329. The reversal of 1204211311 is 1131124021.

It is a balanced prime because it is at equal distance from previous prime (1204211293) and next prime (1204211329).

It is an emirp because it is prime and its reverse (1131124021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1204211311 - 2¹⁵ = 1204178543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1204211381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602105655 + 602105656.

It is an arithmetic number, because the mean of its divisors is an integer number (602105656).

Almost surely, 2^1204211311 is an apocalyptic number.

1204211311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1204211311 is an equidigital number, since it uses as much as digits as its factorization.

1204211311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1204211311 is about 34701.7479530931. The cubic root of 1204211311 is about 1063.9002249587.

Adding to 1204211311 its reverse (1131124021), we get a palindrome (2335335332).

The spelling of 1204211311 in words is "one billion, two hundred four million, two hundred eleven thousand, three hundred eleven".