343534254421 has 4 divisors (see below), whose sum is σ = 343535892652. Its totient is φ = 343532616192.

The previous prime is 343534254407. The next prime is 343534254431. The reversal of 343534254421 is 124452435343.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124452435343 = 10657 ⋅11677999.

It can be written as a sum of positive squares in 2 ways, for example, as 192146339025 + 151387915396 = 438345^2 + 389086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343534254421 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 (343534254431) 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, 448746 + ... + 942571.

It is an arithmetic number, because the mean of its divisors is an integer number (85883973163).

Almost surely, 2^343534254421 is an apocalyptic number.

It is an amenable number.

343534254421 is a deficient number, since it is larger than the sum of its proper divisors (1638231).

343534254421 is a wasteful number, since it uses less digits than its factorization.

343534254421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638230.

The product of its digits is 691200, while the sum is 40.

Adding to 343534254421 its reverse (124452435343), we get a palindrome (467986689764).

The spelling of 343534254421 in words is "three hundred forty-three billion, five hundred thirty-four million, two hundred fifty-four thousand, four hundred twenty-one".