1131246065 has 8 divisors (see below), whose sum is σ = 1404305640. Its totient is φ = 873789952.

The previous prime is 1131246059. The next prime is 1131246089. The reversal of 1131246065 is 5606421311.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 25816561 + 1105429504 = 5081^2 + 33248^2 .

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

It is not a de Polignac number, because 1131246065 - 2⁴ = 1131246049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3900704 + ... + 3900993.

It is an arithmetic number, because the mean of its divisors is an integer number (175538205).

Almost surely, 2^1131246065 is an apocalyptic number.

It is an amenable number.

1131246065 is a deficient number, since it is larger than the sum of its proper divisors (273059575).

1131246065 is an equidigital number, since it uses as much as digits as its factorization.

1131246065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7801731.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1131246065 is about 33634.0016203841. The cubic root of 1131246065 is about 1041.9631512175.

Adding to 1131246065 its reverse (5606421311), we get a palindrome (6737667376).

The spelling of 1131246065 in words is "one billion, one hundred thirty-one million, two hundred forty-six thousand, sixty-five".