321023131055 has 32 divisors (see below), whose sum is σ = 427036373568. Its totient is φ = 229728153600.

The previous prime is 321023130947. The next prime is 321023131069. The reversal of 321023131055 is 550131320123.

It is not a de Polignac number, because 321023131055 - 2¹⁰ = 321023130031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 749045 + ... + 1096865.

It is an arithmetic number, because the mean of its divisors is an integer number (13344886674).

Almost surely, 2^321023131055 is an apocalyptic number.

321023131055 is a deficient number, since it is larger than the sum of its proper divisors (106013242513).

321023131055 is a wasteful number, since it uses less digits than its factorization.

321023131055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348107.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 321023131055 its reverse (550131320123), we get a palindrome (871154451178).

The spelling of 321023131055 in words is "three hundred twenty-one billion, twenty-three million, one hundred thirty-one thousand, fifty-five".