1311716529 has 6 divisors (see below), whose sum is σ = 1894701666. Its totient is φ = 874477680.

The previous prime is 1311716507. The next prime is 1311716533. The reversal of 1311716529 is 9256171131.

It is a happy number.

1311716529 is a `hidden beast` number, since 1 + 3 + 117 + 16 + 529 = 666.

It can be written as a sum of positive squares in only one way, i.e., 747749025 + 563967504 = 27345^2 + 23748^2 .

It is not a de Polignac number, because 1311716529 - 2²⁴ = 1294939313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311716493 and 1311716502.

It is not an unprimeable number, because it can be changed into a prime (1311716569) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72873132 + ... + 72873149.

It is an arithmetic number, because the mean of its divisors is an integer number (315783611).

Almost surely, 2^1311716529 is an apocalyptic number.

It is an amenable number.

1311716529 is a deficient number, since it is larger than the sum of its proper divisors (582985137).

1311716529 is a wasteful number, since it uses less digits than its factorization.

1311716529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145746287 (or 145746284 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 1311716529 is about 36217.6273242740. The cubic root of 1311716529 is about 1094.6618859751.

It can be divided in two parts, 13117 and 16529, that added together give a triangular number (29646 = T₂₄₃).

The spelling of 1311716529 in words is "one billion, three hundred eleven million, seven hundred sixteen thousand, five hundred twenty-nine".