321055043 has 4 divisors (see below), whose sum is σ = 322151088. Its totient is φ = 319959000.

The previous prime is 321055001. The next prime is 321055057. The reversal of 321055043 is 340550123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 321055043 - 2⁸ = 321054787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321055093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547583 + ... + 548168.

It is an arithmetic number, because the mean of its divisors is an integer number (80537772).

Almost surely, 2^321055043 is an apocalyptic number.

321055043 is a deficient number, since it is larger than the sum of its proper divisors (1096045).

321055043 is a wasteful number, since it uses less digits than its factorization.

321055043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096044.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 321055043 is about 17918.0089016609. The cubic root of 321055043 is about 684.7412616152.

The spelling of 321055043 in words is "three hundred twenty-one million, fifty-five thousand, forty-three".