1171307513 has 2 divisors, whose sum is σ = 1171307514. Its totient is φ = 1171307512.

The previous prime is 1171307387. The next prime is 1171307521. The reversal of 1171307513 is 3157031711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 676156009 + 495151504 = 26003^2 + 22252^2 .

It is a cyclic number.

It is not a de Polignac number, because 1171307513 - 2¹⁰ = 1171306489 is a prime.

It is a super-2 number, since 2×1171307513² = 2743922580020490338, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1171307713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585653756 + 585653757.

It is an arithmetic number, because the mean of its divisors is an integer number (585653757).

Almost surely, 2^1171307513 is an apocalyptic number.

It is an amenable number.

1171307513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1171307513 is an equidigital number, since it uses as much as digits as its factorization.

1171307513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2205, while the sum is 29.

The square root of 1171307513 is about 34224.3701622104. The cubic root of 1171307513 is about 1054.1206220789.

The spelling of 1171307513 in words is "one billion, one hundred seventy-one million, three hundred seven thousand, five hundred thirteen".