1311111302133 has 16 divisors (see below), whose sum is σ = 1840304227520. Its totient is φ = 828003689856.

The previous prime is 1311111302119. The next prime is 1311111302143. The reversal of 1311111302133 is 3312031111131.

It is not a de Polignac number, because 1311111302133 - 2⁶ = 1311111302069 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 (1311111302143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205360 + ... + 1632297.

It is an arithmetic number, because the mean of its divisors is an integer number (115019014220).

Almost surely, 2^{1311111302133} is an apocalyptic number.

It is an amenable number.

1311111302133 is a deficient number, since it is larger than the sum of its proper divisors (529192925387).

1311111302133 is a wasteful number, since it uses less digits than its factorization.

1311111302133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1850196.

The product of its (nonzero) digits is 162, while the sum is 21.

Adding to 1311111302133 its reverse (3312031111131), we get a palindrome (4623142413264).

The spelling of 1311111302133 in words is "one trillion, three hundred eleven billion, one hundred eleven million, three hundred two thousand, one hundred thirty-three".