321130013123 has 4 divisors (see below), whose sum is σ = 321397399848. Its totient is φ = 320862626400.

The previous prime is 321130013117. The next prime is 321130013131. The reversal of 321130013123 is 321310031123.

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 321130013123 - 2¹⁴ = 321129996739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321130013095 and 321130013104.

It is not an unprimeable number, because it can be changed into a prime (321130013423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133691561 + ... + 133693962.

It is an arithmetic number, because the mean of its divisors is an integer number (80349349962).

Almost surely, 2^321130013123 is an apocalyptic number.

321130013123 is a deficient number, since it is larger than the sum of its proper divisors (267386725).

321130013123 is a wasteful number, since it uses less digits than its factorization.

321130013123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267386724.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 321130013123 its reverse (321310031123), we get a palindrome (642440044246).

The spelling of 321130013123 in words is "three hundred twenty-one billion, one hundred thirty million, thirteen thousand, one hundred twenty-three".