961578312 has 16 divisors (see below), whose sum is σ = 2403945840. Its totient is φ = 320526096.

The previous prime is 961578307. The next prime is 961578389. The reversal of 961578312 is 213875169.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20032858 + ... + 20032905.

It is an arithmetic number, because the mean of its divisors is an integer number (150246615).

Almost surely, 2^961578312 is an apocalyptic number.

It is an amenable number.

961578312 is an abundant number, since it is smaller than the sum of its proper divisors (1442367528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

961578312 is a wasteful number, since it uses less digits than its factorization.

961578312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40065772 (or 40065768 counting only the distinct ones).

The product of its digits is 90720, while the sum is 42.

The square root of 961578312 is about 31009.3262100291. The cubic root of 961578312 is about 987.0251520789.

The spelling of 961578312 in words is "nine hundred sixty-one million, five hundred seventy-eight thousand, three hundred twelve".