321421023231043 has 4 divisors (see below), whose sum is σ = 328895930748088. Its totient is φ = 313946115714000.

The previous prime is 321421023231031. The next prime is 321421023231083. The reversal of 321421023231043 is 340132320124123.

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 321421023231043 - 2¹⁷ = 321421023099971 is a prime.

It is a super-3 number, since 3×321421023231043³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321421023230996 and 321421023231014.

It is not an unprimeable number, because it can be changed into a prime (321421023231083) 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 3 ways as a sum of consecutive naturals, for example, 3737453758458 + ... + 3737453758543.

It is an arithmetic number, because the mean of its divisors is an integer number (82223982687022).

Almost surely, 2^{321421023231043} is an apocalyptic number.

321421023231043 is a deficient number, since it is larger than the sum of its proper divisors (7474907517045).

321421023231043 is an equidigital number, since it uses as much as digits as its factorization.

321421023231043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7474907517044.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 321421023231043 its reverse (340132320124123), we get a palindrome (661553343355166).

The spelling of 321421023231043 in words is "three hundred twenty-one trillion, four hundred twenty-one billion, twenty-three million, two hundred thirty-one thousand, forty-three".