343921641 has 48 divisors (see below), whose sum is σ = 564710400. Its totient is φ = 185664528.

The previous prime is 343921609. The next prime is 343921661. The reversal of 343921641 is 146129343.

It is not a de Polignac number, because 343921641 - 2⁵ = 343921609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (343921661) 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 47 ways as a sum of consecutive naturals, for example, 957820 + ... + 958178.

It is an arithmetic number, because the mean of its divisors is an integer number (11764800).

Almost surely, 2^343921641 is an apocalyptic number.

It is an amenable number.

343921641 is a deficient number, since it is larger than the sum of its proper divisors (220788759).

343921641 is an frugal number, since it uses more digits than its factorization.

343921641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416 (or 388 counting only the distinct ones).

The product of its digits is 15552, while the sum is 33.

The square root of 343921641 is about 18545.1244536131. The cubic root of 343921641 is about 700.6264059503.

The spelling of 343921641 in words is "three hundred forty-three million, nine hundred twenty-one thousand, six hundred forty-one".