1431144317 has 2 divisors, whose sum is σ = 1431144318. Its totient is φ = 1431144316.

The previous prime is 1431144293. The next prime is 1431144397. The reversal of 1431144317 is 7134411341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1427403961 + 3740356 = 37781^2 + 1934^2 .

It is a cyclic number.

It is not a de Polignac number, because 1431144317 - 2¹⁰ = 1431143293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1431144317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1431144397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715572158 + 715572159.

It is an arithmetic number, because the mean of its divisors is an integer number (715572159).

Almost surely, 2^1431144317 is an apocalyptic number.

It is an amenable number.

1431144317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431144317 is an equidigital number, since it uses as much as digits as its factorization.

1431144317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 29.

The square root of 1431144317 is about 37830.4681044261. The cubic root of 1431144317 is about 1126.9236073054.

Adding to 1431144317 its reverse (7134411341), we get a palindrome (8565555658).

The spelling of 1431144317 in words is "one billion, four hundred thirty-one million, one hundred forty-four thousand, three hundred seventeen".