431305989097 has 2 divisors, whose sum is σ = 431305989098. Its totient is φ = 431305989096.

The previous prime is 431305989083. The next prime is 431305989139. The reversal of 431305989097 is 790989503134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 406452151296 + 24853837801 = 637536^2 + 157651^2 .

It is a cyclic number.

It is not a de Polignac number, because 431305989097 - 2²⁷ = 431171771369 is a prime.

It is not a weakly prime, because it can be changed into another prime (431305989497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215652994548 + 215652994549.

It is an arithmetic number, because the mean of its divisors is an integer number (215652994549).

Almost surely, 2^431305989097 is an apocalyptic number.

It is an amenable number.

431305989097 is a deficient number, since it is larger than the sum of its proper divisors (1).

431305989097 is an equidigital number, since it uses as much as digits as its factorization.

431305989097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7348320, while the sum is 58.

The spelling of 431305989097 in words is "four hundred thirty-one billion, three hundred five million, nine hundred eighty-nine thousand, ninety-seven".