3231906985 has 24 divisors (see below), whose sum is σ = 4105825920. Its totient is φ = 2441648352.

The previous prime is 3231906947. The next prime is 3231907033. The reversal of 3231906985 is 5896091323.

It is a happy number.

It is not a de Polignac number, because 3231906985 - 2³¹ = 1084423337 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 201222 + ... + 216688.

It is an arithmetic number, because the mean of its divisors is an integer number (171076080).

Almost surely, 2^3231906985 is an apocalyptic number.

It is an amenable number.

3231906985 is a deficient number, since it is larger than the sum of its proper divisors (873918935).

3231906985 is a wasteful number, since it uses less digits than its factorization.

3231906985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15597 (or 15574 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 3231906985 is about 56849.8635442514. The cubic root of 3231906985 is about 1478.4941746820.

The spelling of 3231906985 in words is "three billion, two hundred thirty-one million, nine hundred six thousand, nine hundred eighty-five".