3216542123 has 4 divisors (see below), whose sum is σ = 3216971808. Its totient is φ = 3216112440.

The previous prime is 3216542101. The next prime is 3216542141. The reversal of 3216542123 is 3212456123.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3216542123 is a prime.

It is a super-2 number, since 2×3216542123² = 20692286458066694258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3216542183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203411 + ... + 218652.

It is an arithmetic number, because the mean of its divisors is an integer number (804242952).

Almost surely, 2^3216542123 is an apocalyptic number.

3216542123 is a deficient number, since it is larger than the sum of its proper divisors (429685).

3216542123 is an equidigital number, since it uses as much as digits as its factorization.

3216542123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429684.

The product of its digits is 8640, while the sum is 29.

The square root of 3216542123 is about 56714.5671146311. The cubic root of 3216542123 is about 1476.1474741137.

Adding to 3216542123 its reverse (3212456123), we get a palindrome (6428998246).

The spelling of 3216542123 in words is "three billion, two hundred sixteen million, five hundred forty-two thousand, one hundred twenty-three".