1131302113 has 4 divisors (see below), whose sum is σ = 1131567300. Its totient is φ = 1131036928.

The previous prime is 1131302087. The next prime is 1131302147. The reversal of 1131302113 is 3112031311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3112031311 = 967 ⋅3218233.

It can be written as a sum of positive squares in 2 ways, for example, as 146095569 + 985206544 = 12087^2 + 31388^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131302113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131302413) 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, 126088 + ... + 134761.

It is an arithmetic number, because the mean of its divisors is an integer number (282891825).

Almost surely, 2^1131302113 is an apocalyptic number.

It is an amenable number.

1131302113 is a deficient number, since it is larger than the sum of its proper divisors (265187).

1131302113 is an equidigital number, since it uses as much as digits as its factorization.

1131302113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265186.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1131302113 is about 33634.8348145193. The cubic root of 1131302113 is about 1041.9803590817.

Adding to 1131302113 its reverse (3112031311), we get a palindrome (4243333424).

The spelling of 1131302113 in words is "one billion, one hundred thirty-one million, three hundred two thousand, one hundred thirteen".