1203111301311 has 6 divisors (see below), whose sum is σ = 1737827435240. Its totient is φ = 802074200868.

The previous prime is 1203111301297. The next prime is 1203111301319. The reversal of 1203111301311 is 1131031113021.

1203111301311 is a `hidden beast` number, since 1 + 20 + 31 + 1 + 1 + 301 + 311 = 666.

It is not a de Polignac number, because 1203111301311 - 2⁶ = 1203111301247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203111301319) 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 5 ways as a sum of consecutive naturals, for example, 66839516731 + ... + 66839516748.

Almost surely, 2^{1203111301311} is an apocalyptic number.

1203111301311 is a deficient number, since it is larger than the sum of its proper divisors (534716133929).

1203111301311 is a wasteful number, since it uses less digits than its factorization.

1203111301311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133679033485 (or 133679033482 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 1203111301311 its reverse (1131031113021), we get a palindrome (2334142414332).

The spelling of 1203111301311 in words is "one trillion, two hundred three billion, one hundred eleven million, three hundred one thousand, three hundred eleven".