3231216689 has 4 divisors (see below), whose sum is σ = 3231545460. Its totient is φ = 3230887920.

The previous prime is 3231216671. The next prime is 3231216691. The reversal of 3231216689 is 9866121323.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1591371664 + 1639845025 = 39892^2 + 40495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3231216689 is a prime.

It is a super-2 number, since 2×3231216689² = 20881522582544245442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3231216619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149174 + ... + 169455.

It is an arithmetic number, because the mean of its divisors is an integer number (807886365).

Almost surely, 2^3231216689 is an apocalyptic number.

It is an amenable number.

3231216689 is a deficient number, since it is larger than the sum of its proper divisors (328771).

3231216689 is a wasteful number, since it uses less digits than its factorization.

3231216689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328770.

The product of its digits is 93312, while the sum is 41.

The square root of 3231216689 is about 56843.7920005342. The cubic root of 3231216689 is about 1478.3889043993.

The spelling of 3231216689 in words is "three billion, two hundred thirty-one million, two hundred sixteen thousand, six hundred eighty-nine".