343563320661 has 32 divisors (see below), whose sum is σ = 513706201728. Its totient is φ = 202406480640.

The previous prime is 343563320609. The next prime is 343563320693. The reversal of 343563320661 is 166023365343.

It is a happy number.

It is not a de Polignac number, because 343563320661 - 2¹⁹ = 343562796373 is a prime.

It is a super-2 number, since 2×343563320661² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343563320861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1205835 + ... + 1463271.

It is an arithmetic number, because the mean of its divisors is an integer number (16053318804).

Almost surely, 2^343563320661 is an apocalyptic number.

It is an amenable number.

343563320661 is a deficient number, since it is larger than the sum of its proper divisors (170142881067).

343563320661 is a wasteful number, since it uses less digits than its factorization.

343563320661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258581.

The product of its (nonzero) digits is 699840, while the sum is 42.

The spelling of 343563320661 in words is "three hundred forty-three billion, five hundred sixty-three million, three hundred twenty thousand, six hundred sixty-one".