321213031123 has 16 divisors (see below), whose sum is σ = 323309226240. Its totient is φ = 319125808800.

The previous prime is 321213031121. The next prime is 321213031127. The reversal of 321213031123 is 321130312123.

It is a cyclic number.

It is not a de Polignac number, because 321213031123 - 2¹ = 321213031121 is a prime.

It is a super-2 number, since 2×321213031123² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321213031094 and 321213031103.

It is not an unprimeable number, because it can be changed into a prime (321213031121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166344468 + ... + 166346398.

It is an arithmetic number, because the mean of its divisors is an integer number (20206826640).

Almost surely, 2^321213031123 is an apocalyptic number.

321213031123 is a deficient number, since it is larger than the sum of its proper divisors (2096195117).

321213031123 is a wasteful number, since it uses less digits than its factorization.

321213031123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3738.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 321213031123 its reverse (321130312123), we get a palindrome (642343343246).

The spelling of 321213031123 in words is "three hundred twenty-one billion, two hundred thirteen million, thirty-one thousand, one hundred twenty-three".