831006978 has 16 divisors (see below), whose sum is σ = 1664271840. Its totient is φ = 276626016.

The previous prime is 831006959. The next prime is 831007003. The reversal of 831006978 is 879600138.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89275 + ... + 98142.

It is an arithmetic number, because the mean of its divisors is an integer number (104016990).

Almost surely, 2^831006978 is an apocalyptic number.

831006978 is an abundant number, since it is smaller than the sum of its proper divisors (833264862).

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

831006978 is a wasteful number, since it uses less digits than its factorization.

831006978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188161.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 831006978 is about 28827.1916426141. The cubic root of 831006978 is about 940.1595390898.

The spelling of 831006978 in words is "eight hundred thirty-one million, six thousand, nine hundred seventy-eight".