1431430441321 has 2 divisors, whose sum is σ = 1431430441322. Its totient is φ = 1431430441320.

The previous prime is 1431430441307. The next prime is 1431430441361. The reversal of 1431430441321 is 1231440341341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1401488984025 + 29941457296 = 1183845^2 + 173036^2 .

It is a cyclic number.

It is not a de Polignac number, because 1431430441321 - 2⁷ = 1431430441193 is a prime.

It is not a weakly prime, because it can be changed into another prime (1431430441361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715715220660 + 715715220661.

It is an arithmetic number, because the mean of its divisors is an integer number (715715220661).

Almost surely, 2^{1431430441321} is an apocalyptic number.

It is an amenable number.

1431430441321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431430441321 is an equidigital number, since it uses as much as digits as its factorization.

1431430441321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 1431430441321 its reverse (1231440341341), we get a palindrome (2662870782662).

The spelling of 1431430441321 in words is "one trillion, four hundred thirty-one billion, four hundred thirty million, four hundred forty-one thousand, three hundred twenty-one".