14231485721 has 2 divisors, whose sum is σ = 14231485722. Its totient is φ = 14231485720.

The previous prime is 14231485711. The next prime is 14231485759. The reversal of 14231485721 is 12758413241.

It is a happy number.

It is an a-pointer prime, because the next prime (14231485759) can be obtained adding 14231485721 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8623722496 + 5607763225 = 92864^2 + 74885^2 .

It is a cyclic number.

It is not a de Polignac number, because 14231485721 - 2⁶ = 14231485657 is a prime.

It is not a weakly prime, because it can be changed into another prime (14231485711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7115742860 + 7115742861.

It is an arithmetic number, because the mean of its divisors is an integer number (7115742861).

Almost surely, 2^14231485721 is an apocalyptic number.

It is an amenable number.

14231485721 is a deficient number, since it is larger than the sum of its proper divisors (1).

14231485721 is an equidigital number, since it uses as much as digits as its factorization.

14231485721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 38.

Adding to 14231485721 its reverse (12758413241), we get a palindrome (26989898962).

The spelling of 14231485721 in words is "fourteen billion, two hundred thirty-one million, four hundred eighty-five thousand, seven hundred twenty-one".