1311533651117 has 8 divisors (see below), whose sum is σ = 1422552999672. Its totient is φ = 1204277670400.

The previous prime is 1311533651101. The next prime is 1311533651161. The reversal of 1311533651117 is 7111563351131.

It can be written as a sum of positive squares in 4 ways, for example, as 45715143721 + 1265818507396 = 213811^2 + 1125086^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1311533651117 - 2⁴ = 1311533651101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311533651167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 940841234 + ... + 940842627.

It is an arithmetic number, because the mean of its divisors is an integer number (177819124959).

Almost surely, 2^{1311533651117} is an apocalyptic number.

1311533651117 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1311533651117 is a deficient number, since it is larger than the sum of its proper divisors (111019348555).

1311533651117 is a wasteful number, since it uses less digits than its factorization.

1311533651117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881683919.

The product of its digits is 28350, while the sum is 38.

The spelling of 1311533651117 in words is "one trillion, three hundred eleven billion, five hundred thirty-three million, six hundred fifty-one thousand, one hundred seventeen".