1204201311 has 4 divisors (see below), whose sum is σ = 1605601752. Its totient is φ = 802800872.

The previous prime is 1204201303. The next prime is 1204201321. The reversal of 1204201311 is 1131024021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1204201311 - 2³ = 1204201303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204201301) 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 in 3 ways as a sum of consecutive naturals, for example, 200700216 + ... + 200700221.

It is an arithmetic number, because the mean of its divisors is an integer number (401400438).

Almost surely, 2^1204201311 is an apocalyptic number.

1204201311 is a deficient number, since it is larger than the sum of its proper divisors (401400441).

1204201311 is an equidigital number, since it uses as much as digits as its factorization.

1204201311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401400440.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1204201311 is about 34701.6038678330. The cubic root of 1204201311 is about 1063.8972800072.

Adding to 1204201311 its reverse (1131024021), we get a palindrome (2335225332).

The spelling of 1204201311 in words is "one billion, two hundred four million, two hundred one thousand, three hundred eleven".