323020256517021 has 16 divisors (see below), whose sum is σ = 499567930479104. Its totient is φ = 181828033518384.

The previous prime is 323020256517011. The next prime is 323020256517107. The reversal of 323020256517021 is 120715652020323.

It is not a de Polignac number, because 323020256517021 - 2⁹ = 323020256516509 is a prime.

It is a super-2 number, since 2×323020256517021² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323020256517011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114790423795 + ... + 114790426608.

It is an arithmetic number, because the mean of its divisors is an integer number (31222995654944).

Almost surely, 2^{323020256517021} is an apocalyptic number.

It is an amenable number.

323020256517021 is a deficient number, since it is larger than the sum of its proper divisors (176547673962083).

323020256517021 is a wasteful number, since it uses less digits than its factorization.

323020256517021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229580850480.

The product of its (nonzero) digits is 151200, while the sum is 39.

The spelling of 323020256517021 in words is "three hundred twenty-three trillion, twenty billion, two hundred fifty-six million, five hundred seventeen thousand, twenty-one".