321112131231 has 4 divisors (see below), whose sum is σ = 428149508312. Its totient is φ = 214074754152.

The previous prime is 321112131229. The next prime is 321112131281. The reversal of 321112131231 is 132131211123.

321112131231 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 321112131231 - 2¹ = 321112131229 is a prime.

It is a super-2 number, since 2×321112131231² (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 = 321112131198 and 321112131207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321112131281) 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, 53518688536 + ... + 53518688541.

It is an arithmetic number, because the mean of its divisors is an integer number (107037377078).

Almost surely, 2^321112131231 is an apocalyptic number.

321112131231 is a deficient number, since it is larger than the sum of its proper divisors (107037377081).

321112131231 is a wasteful number, since it uses less digits than its factorization.

321112131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107037377080.

The product of its digits is 216, while the sum is 21.

Adding to 321112131231 its reverse (132131211123), we get a palindrome (453243342354).

The spelling of 321112131231 in words is "three hundred twenty-one billion, one hundred twelve million, one hundred thirty-one thousand, two hundred thirty-one".