320121323121023 has 4 divisors (see below), whose sum is σ = 320122068803880. Its totient is φ = 320120577438168.

The previous prime is 320121323120999. The next prime is 320121323121043.

320121323121023 is nontrivially palindromic in base 10.

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 320121323121023 - 2¹⁶ = 320121323055487 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320121323120983 and 320121323121001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320121323121043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372197108 + ... + 373056201.

It is an arithmetic number, because the mean of its divisors is an integer number (80030517200970).

Almost surely, 2^{320121323121023} is an apocalyptic number.

320121323121023 is a deficient number, since it is larger than the sum of its proper divisors (745682857).

320121323121023 is an equidigital number, since it uses as much as digits as its factorization.

320121323121023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745682856.

The product of its (nonzero) digits is 2592, while the sum is 26.

The spelling of 320121323121023 in words is "three hundred twenty trillion, one hundred twenty-one billion, three hundred twenty-three million, one hundred twenty-one thousand, twenty-three".