3231216765 has 80 divisors (see below), whose sum is σ = 6781420800. Its totient is φ = 1441048320.

The previous prime is 3231216757. The next prime is 3231216773. The reversal of 3231216765 is 5676121323.

It is an interprime number because it is at equal distance from previous prime (3231216757) and next prime (3231216773).

It is not a de Polignac number, because 3231216765 - 2³ = 3231216757 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 102336 + ... + 130134.

It is an arithmetic number, because the mean of its divisors is an integer number (84767760).

Almost surely, 2^3231216765 is an apocalyptic number.

3231216765 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3231216765 is an abundant number, since it is smaller than the sum of its proper divisors (3550204035).

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

3231216765 is a wasteful number, since it uses less digits than its factorization.

3231216765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27864 (or 27855 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 3231216765 is about 56843.7926690329. The cubic root of 3231216765 is about 1478.3889159902.

The spelling of 3231216765 in words is "three billion, two hundred thirty-one million, two hundred sixteen thousand, seven hundred sixty-five".