1431323317 has 2 divisors, whose sum is σ = 1431323318. Its totient is φ = 1431323316.

The previous prime is 1431323287. The next prime is 1431323321. The reversal of 1431323317 is 7133231341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 723018321 + 708304996 = 26889^2 + 26614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1431323317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1431323017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715661658 + 715661659.

It is an arithmetic number, because the mean of its divisors is an integer number (715661659).

Almost surely, 2^1431323317 is an apocalyptic number.

It is an amenable number.

1431323317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431323317 is an equidigital number, since it uses as much as digits as its factorization.

1431323317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 28.

The square root of 1431323317 is about 37832.8338483915. The cubic root of 1431323317 is about 1126.9705885715.

Adding to 1431323317 its reverse (7133231341), we get a palindrome (8564554658).

The spelling of 1431323317 in words is "one billion, four hundred thirty-one million, three hundred twenty-three thousand, three hundred seventeen".