431352856691 has 2 divisors, whose sum is σ = 431352856692. Its totient is φ = 431352856690.

The previous prime is 431352856643. The next prime is 431352856709. The reversal of 431352856691 is 196658253134.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 431352856691 - 2³⁴ = 414172987507 is a prime.

It is not a weakly prime, because it can be changed into another prime (431352856601) 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, 215676428345 + 215676428346.

It is an arithmetic number, because the mean of its divisors is an integer number (215676428346).

Almost surely, 2^431352856691 is an apocalyptic number.

431352856691 is a deficient number, since it is larger than the sum of its proper divisors (1).

431352856691 is an equidigital number, since it uses as much as digits as its factorization.

431352856691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4665600, while the sum is 53.

The spelling of 431352856691 in words is "four hundred thirty-one billion, three hundred fifty-two million, eight hundred fifty-six thousand, six hundred ninety-one".