1131202613 has 2 divisors, whose sum is σ = 1131202614. Its totient is φ = 1131202612.

The previous prime is 1131202603. The next prime is 1131202621. The reversal of 1131202613 is 3162021311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1052223844 + 78978769 = 32438^2 + 8887^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131202613 - 2¹⁴ = 1131186229 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131202603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565601306 + 565601307.

It is an arithmetic number, because the mean of its divisors is an integer number (565601307).

Almost surely, 2^1131202613 is an apocalyptic number.

It is an amenable number.

1131202613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131202613 is an equidigital number, since it uses as much as digits as its factorization.

1131202613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1131202613 is about 33633.3556607128. The cubic root of 1131202613 is about 1041.9498101876.

Adding to 1131202613 its reverse (3162021311), we get a palindrome (4293223924).

The spelling of 1131202613 in words is "one billion, one hundred thirty-one million, two hundred two thousand, six hundred thirteen".