431788540213 has 2 divisors, whose sum is σ = 431788540214. Its totient is φ = 431788540212.

The previous prime is 431788540163. The next prime is 431788540219. The reversal of 431788540213 is 312045887134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 316841774769 + 114946765444 = 562887^2 + 339038^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431788540213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431788540219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215894270106 + 215894270107.

It is an arithmetic number, because the mean of its divisors is an integer number (215894270107).

Almost surely, 2^431788540213 is an apocalyptic number.

It is an amenable number.

431788540213 is a deficient number, since it is larger than the sum of its proper divisors (1).

431788540213 is an equidigital number, since it uses as much as digits as its factorization.

431788540213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 431788540213 in words is "four hundred thirty-one billion, seven hundred eighty-eight million, five hundred forty thousand, two hundred thirteen".