3216865123 has 4 divisors (see below), whose sum is σ = 3356728848. Its totient is φ = 3077001400.

The previous prime is 3216865109. The next prime is 3216865139. The reversal of 3216865123 is 3215686123.

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

It is a cyclic number.

It is not a de Polignac number, because 3216865123 - 2²¹ = 3214767971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3216865153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69931828 + ... + 69931873.

It is an arithmetic number, because the mean of its divisors is an integer number (839182212).

Almost surely, 2^3216865123 is an apocalyptic number.

3216865123 is a deficient number, since it is larger than the sum of its proper divisors (139863725).

3216865123 is a wasteful number, since it uses less digits than its factorization.

3216865123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139863724.

The product of its digits is 51840, while the sum is 37.

The square root of 3216865123 is about 56717.4146360710. The cubic root of 3216865123 is about 1476.1968832469.

The spelling of 3216865123 in words is "three billion, two hundred sixteen million, eight hundred sixty-five thousand, one hundred twenty-three".