343263612605421 has 4 divisors (see below), whose sum is σ = 457684816807232. Its totient is φ = 228842408403612.

The previous prime is 343263612605393. The next prime is 343263612605443. The reversal of 343263612605421 is 124506216362343.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 343263612605421 - 2²² = 343263608411117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343263612605491) 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, 57210602100901 + ... + 57210602100906.

It is an arithmetic number, because the mean of its divisors is an integer number (114421204201808).

Almost surely, 2^{343263612605421} is an apocalyptic number.

It is an amenable number.

343263612605421 is a deficient number, since it is larger than the sum of its proper divisors (114421204201811).

343263612605421 is a wasteful number, since it uses less digits than its factorization.

343263612605421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114421204201810.

The product of its (nonzero) digits is 3732480, while the sum is 48.

Adding to 343263612605421 its reverse (124506216362343), we get a palindrome (467769828967764).

The spelling of 343263612605421 in words is "three hundred forty-three trillion, two hundred sixty-three billion, six hundred twelve million, six hundred five thousand, four hundred twenty-one".