321100223131 has 4 divisors (see below), whose sum is σ = 321130415200. Its totient is φ = 321070031064.

The previous prime is 321100223083. The next prime is 321100223137. The reversal of 321100223131 is 131322001123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131322001123 = 461 ⋅284863343.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321100223131 is a prime.

It is a super-2 number, since 2×321100223131² (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 = 321100223099 and 321100223108.

It is not an unprimeable number, because it can be changed into a prime (321100223137) 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, 15080076 + ... + 15101353.

It is an arithmetic number, because the mean of its divisors is an integer number (80282603800).

Almost surely, 2^321100223131 is an apocalyptic number.

321100223131 is a deficient number, since it is larger than the sum of its proper divisors (30192069).

321100223131 is a wasteful number, since it uses less digits than its factorization.

321100223131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30192068.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 321100223131 its reverse (131322001123), we get a palindrome (452422224254).

The spelling of 321100223131 in words is "three hundred twenty-one billion, one hundred million, two hundred twenty-three thousand, one hundred thirty-one".