1233201311 has 4 divisors (see below), whose sum is σ = 1235125824. Its totient is φ = 1231276800.

The previous prime is 1233201293. The next prime is 1233201317. The reversal of 1233201311 is 1131023321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1233201311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1233201311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233201317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 961295 + ... + 962576.

It is an arithmetic number, because the mean of its divisors is an integer number (308781456).

Almost surely, 2^1233201311 is an apocalyptic number.

1233201311 is a deficient number, since it is larger than the sum of its proper divisors (1924513).

1233201311 is an equidigital number, since it uses as much as digits as its factorization.

1233201311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924512.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1233201311 is about 35116.9661417384. The cubic root of 1233201311 is about 1072.3700082433.

Adding to 1233201311 its reverse (1131023321), we get a palindrome (2364224632).

The spelling of 1233201311 in words is "one billion, two hundred thirty-three million, two hundred one thousand, three hundred eleven".