1311502261133 has 4 divisors (see below), whose sum is σ = 1311555661728. Its totient is φ = 1311448860540.

The previous prime is 1311502261061. The next prime is 1311502261177. The reversal of 1311502261133 is 3311622051131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1311502261133 - 2²⁸ = 1311233825677 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311502261096 and 1311502261105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311502261033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26663441 + ... + 26712582.

It is an arithmetic number, because the mean of its divisors is an integer number (327888915432).

Almost surely, 2^{1311502261133} is an apocalyptic number.

It is an amenable number.

1311502261133 is a deficient number, since it is larger than the sum of its proper divisors (53400595).

1311502261133 is an equidigital number, since it uses as much as digits as its factorization.

1311502261133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53400594.

The product of its (nonzero) digits is 3240, while the sum is 29.

The spelling of 1311502261133 in words is "one trillion, three hundred eleven billion, five hundred two million, two hundred sixty-one thousand, one hundred thirty-three".