3231906978 has 32 divisors (see below), whose sum is σ = 6496411392. Its totient is φ = 1071882000.

The previous prime is 3231906947. The next prime is 3231907033. The reversal of 3231906978 is 8796091323.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1783693 + ... + 1785503.

It is an arithmetic number, because the mean of its divisors is an integer number (203012856).

Almost surely, 2^3231906978 is an apocalyptic number.

3231906978 is an abundant number, since it is smaller than the sum of its proper divisors (3264504414).

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

3231906978 is a wasteful number, since it uses less digits than its factorization.

3231906978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3150.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 3231906978 is about 56849.8634826857. The cubic root of 3231906978 is about 1478.4941736146.

The spelling of 3231906978 in words is "three billion, two hundred thirty-one million, nine hundred six thousand, nine hundred seventy-eight".