431605657597 has 2 divisors, whose sum is σ = 431605657598. Its totient is φ = 431605657596.

The previous prime is 431605657583. The next prime is 431605657603. The reversal of 431605657597 is 795756506134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 417995868676 + 13609788921 = 646526^2 + 116661^2 .

It is a cyclic number.

It is not a de Polignac number, because 431605657597 - 2¹⁵ = 431605624829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431605657577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215802828798 + 215802828799.

It is an arithmetic number, because the mean of its divisors is an integer number (215802828799).

Almost surely, 2^431605657597 is an apocalyptic number.

It is an amenable number.

431605657597 is a deficient number, since it is larger than the sum of its proper divisors (1).

431605657597 is an equidigital number, since it uses as much as digits as its factorization.

431605657597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23814000, while the sum is 58.

The spelling of 431605657597 in words is "four hundred thirty-one billion, six hundred five million, six hundred fifty-seven thousand, five hundred ninety-seven".