321231004001 has 2 divisors, whose sum is σ = 321231004002. Its totient is φ = 321231004000.

The previous prime is 321231003991. The next prime is 321231004007. The reversal of 321231004001 is 100400132123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 276414114001 + 44816890000 = 525751^2 + 211700^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321231004001 is a prime.

It is not a weakly prime, because it can be changed into another prime (321231004007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160615502000 + 160615502001.

It is an arithmetic number, because the mean of its divisors is an integer number (160615502001).

Almost surely, 2^321231004001 is an apocalyptic number.

It is an amenable number.

321231004001 is a deficient number, since it is larger than the sum of its proper divisors (1).

321231004001 is an equidigital number, since it uses as much as digits as its factorization.

321231004001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 321231004001 its reverse (100400132123), we get a palindrome (421631136124).

The spelling of 321231004001 in words is "three hundred twenty-one billion, two hundred thirty-one million, four thousand, one".