978084331 has 8 divisors (see below), whose sum is σ = 1118066144. Its totient is φ = 838166400.

The previous prime is 978084329. The next prime is 978084347. The reversal of 978084331 is 133480879.

It is a happy number.

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 978084331 - 2¹ = 978084329 is a prime.

It is a super-2 number, since 2×978084331² = 1913297917095435122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (978084031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23281 + ... + 49981.

It is an arithmetic number, because the mean of its divisors is an integer number (139758268).

Almost surely, 2^978084331 is an apocalyptic number.

978084331 is a deficient number, since it is larger than the sum of its proper divisors (139981813).

978084331 is a wasteful number, since it uses less digits than its factorization.

978084331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31941.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 978084331 is about 31274.3398171728. The cubic root of 978084331 is about 992.6407513142.

The spelling of 978084331 in words is "nine hundred seventy-eight million, eighty-four thousand, three hundred thirty-one".