34128212143 has 4 divisors (see below), whose sum is σ = 34772140728. Its totient is φ = 33484283560.

The previous prime is 34128212123. The next prime is 34128212159. The reversal of 34128212143 is 34121282143.

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-34128212143 is a prime.

It is a super-2 number, since 2×34128212143² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34128212123) 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, 321964213 + ... + 321964318.

It is an arithmetic number, because the mean of its divisors is an integer number (8693035182).

Almost surely, 2^34128212143 is an apocalyptic number.

34128212143 is a deficient number, since it is larger than the sum of its proper divisors (643928585).

34128212143 is an equidigital number, since it uses as much as digits as its factorization.

34128212143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643928584.

The product of its digits is 9216, while the sum is 31.

Adding to 34128212143 its reverse (34121282143), we get a palindrome (68249494286).

The spelling of 34128212143 in words is "thirty-four billion, one hundred twenty-eight million, two hundred twelve thousand, one hundred forty-three".