431724446869 has 2 divisors, whose sum is σ = 431724446870. Its totient is φ = 431724446868.

The previous prime is 431724446843. The next prime is 431724446873. The reversal of 431724446869 is 968644427134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 363205102225 + 68519344644 = 602665^2 + 261762^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431724446869 is a prime.

It is a super-2 number, since 2×431724446869² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431724446819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215862223434 + 215862223435.

It is an arithmetic number, because the mean of its divisors is an integer number (215862223435).

Almost surely, 2^431724446869 is an apocalyptic number.

It is an amenable number.

431724446869 is a deficient number, since it is larger than the sum of its proper divisors (1).

431724446869 is an equidigital number, since it uses as much as digits as its factorization.

431724446869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27869184, while the sum is 58.

The spelling of 431724446869 in words is "four hundred thirty-one billion, seven hundred twenty-four million, four hundred forty-six thousand, eight hundred sixty-nine".