961311982 has 8 divisors (see below), whose sum is σ = 1450024200. Its totient is φ = 477970584.

The previous prime is 961311947. The next prime is 961311983. The reversal of 961311982 is 289113169.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961311983) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1342257 + ... + 1342972.

It is an arithmetic number, because the mean of its divisors is an integer number (181253025).

Almost surely, 2^961311982 is an apocalyptic number.

961311982 is a deficient number, since it is larger than the sum of its proper divisors (488712218).

961311982 is a wasteful number, since it uses less digits than its factorization.

961311982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2685410.

The product of its digits is 23328, while the sum is 40.

The square root of 961311982 is about 31005.0315594098. The cubic root of 961311982 is about 986.9340176462.

The spelling of 961311982 in words is "nine hundred sixty-one million, three hundred eleven thousand, nine hundred eighty-two".