34043431021 has 4 divisors (see below), whose sum is σ = 34166331772. Its totient is φ = 33920530272.

The previous prime is 34043431007. The next prime is 34043431091. The reversal of 34043431021 is 12013434043.

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 20792198025 + 13251232996 = 144195^2 + 115114^2 .

It is a cyclic number.

It is not a de Polignac number, because 34043431021 - 2¹⁵ = 34043398253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34043431091) 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, 61449960 + ... + 61450513.

It is an arithmetic number, because the mean of its divisors is an integer number (8541582943).

Almost surely, 2^34043431021 is an apocalyptic number.

It is an amenable number.

34043431021 is a deficient number, since it is larger than the sum of its proper divisors (122900751).

34043431021 is a wasteful number, since it uses less digits than its factorization.

34043431021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122900750.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 34043431021 its reverse (12013434043), we get a palindrome (46056865064).

The spelling of 34043431021 in words is "thirty-four billion, forty-three million, four hundred thirty-one thousand, twenty-one".