321400441231 has 4 divisors (see below), whose sum is σ = 321774598600. Its totient is φ = 321026283864.

The previous prime is 321400441217. The next prime is 321400441249. The reversal of 321400441231 is 132144004123.

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 321400441231 - 2³³ = 312810506639 is a prime.

It is a super-2 number, since 2×321400441231² (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 = 321400441196 and 321400441205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321400441291) 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, 187077396 + ... + 187079113.

It is an arithmetic number, because the mean of its divisors is an integer number (80443649650).

Almost surely, 2^321400441231 is an apocalyptic number.

321400441231 is a deficient number, since it is larger than the sum of its proper divisors (374157369).

321400441231 is an equidigital number, since it uses as much as digits as its factorization.

321400441231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374157368.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 321400441231 its reverse (132144004123), we get a palindrome (453544445354).

The spelling of 321400441231 in words is "three hundred twenty-one billion, four hundred million, four hundred forty-one thousand, two hundred thirty-one".