961143811 has 8 divisors (see below), whose sum is σ = 967057200. Its totient is φ = 955249152.

The previous prime is 961143791. The next prime is 961143829. The reversal of 961143811 is 118341169.

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

It is a cyclic number.

It is not a de Polignac number, because 961143811 - 2⁹ = 961143299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (961143881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106140 + ... + 114838.

It is an arithmetic number, because the mean of its divisors is an integer number (120882150).

Almost surely, 2^961143811 is an apocalyptic number.

961143811 is a deficient number, since it is larger than the sum of its proper divisors (5913389).

961143811 is a wasteful number, since it uses less digits than its factorization.

961143811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9365.

The product of its digits is 5184, while the sum is 34.

The square root of 961143811 is about 31002.3194454867. The cubic root of 961143811 is about 986.8764631917.

The spelling of 961143811 in words is "nine hundred sixty-one million, one hundred forty-three thousand, eight hundred eleven".