431196407321 has 2 divisors, whose sum is σ = 431196407322. Its totient is φ = 431196407320.

The previous prime is 431196407303. The next prime is 431196407371. The reversal of 431196407321 is 123704691134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 422890090000 + 8306317321 = 650300^2 + 91139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431196407321 is a prime.

It is not a weakly prime, because it can be changed into another prime (431196407371) 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, 215598203660 + 215598203661.

It is an arithmetic number, because the mean of its divisors is an integer number (215598203661).

Almost surely, 2^431196407321 is an apocalyptic number.

It is an amenable number.

431196407321 is a deficient number, since it is larger than the sum of its proper divisors (1).

431196407321 is an equidigital number, since it uses as much as digits as its factorization.

431196407321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 41.

The spelling of 431196407321 in words is "four hundred thirty-one billion, one hundred ninety-six million, four hundred seven thousand, three hundred twenty-one".