431370840709 has 2 divisors, whose sum is σ = 431370840710. Its totient is φ = 431370840708.

The previous prime is 431370840673. The next prime is 431370840739. The reversal of 431370840709 is 907048073134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 428357160100 + 3013680609 = 654490^2 + 54897^2 .

It is a cyclic number.

It is not a de Polignac number, because 431370840709 - 2¹³ = 431370832517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431370840739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215685420354 + 215685420355.

It is an arithmetic number, because the mean of its divisors is an integer number (215685420355).

Almost surely, 2^431370840709 is an apocalyptic number.

It is an amenable number.

431370840709 is a deficient number, since it is larger than the sum of its proper divisors (1).

431370840709 is an equidigital number, since it uses as much as digits as its factorization.

431370840709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 431370840709 in words is "four hundred thirty-one billion, three hundred seventy million, eight hundred forty thousand, seven hundred nine".