343291551221 has 8 divisors (see below), whose sum is σ = 360768998304. Its totient is φ = 326245646160.

The previous prime is 343291551157. The next prime is 343291551223. The reversal of 343291551221 is 122155192343.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 343291551221 - 2⁶ = 343291551157 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 (343291551223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107883875 + ... + 107887056.

It is an arithmetic number, because the mean of its divisors is an integer number (45096124788).

Almost surely, 2^343291551221 is an apocalyptic number.

It is an amenable number.

343291551221 is a deficient number, since it is larger than the sum of its proper divisors (17477447083).

343291551221 is a wasteful number, since it uses less digits than its factorization.

343291551221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215771011.

The product of its digits is 64800, while the sum is 38.

The spelling of 343291551221 in words is "three hundred forty-three billion, two hundred ninety-one million, five hundred fifty-one thousand, two hundred twenty-one".