321131403001 has 2 divisors, whose sum is σ = 321131403002. Its totient is φ = 321131403000.

The previous prime is 321131402971. The next prime is 321131403007. The reversal of 321131403001 is 100304131123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 320757986025 + 373416976 = 566355^2 + 19324^2 .

It is a cyclic number.

It is not a de Polignac number, because 321131403001 - 2⁷ = 321131402873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 321131403001.

It is not a weakly prime, because it can be changed into another prime (321131403007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160565701500 + 160565701501.

It is an arithmetic number, because the mean of its divisors is an integer number (160565701501).

Almost surely, 2^321131403001 is an apocalyptic number.

It is an amenable number.

321131403001 is a deficient number, since it is larger than the sum of its proper divisors (1).

321131403001 is an equidigital number, since it uses as much as digits as its factorization.

321131403001 is an odious number, because the sum of its binary digits is odd.

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

Adding to 321131403001 its reverse (100304131123), we get a palindrome (421435534124).

The spelling of 321131403001 in words is "three hundred twenty-one billion, one hundred thirty-one million, four hundred three thousand, one".