4311200232721 has 2 divisors, whose sum is σ = 4311200232722. Its totient is φ = 4311200232720.

The previous prime is 4311200232673. The next prime is 4311200232761. The reversal of 4311200232721 is 1272320021134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3485035580625 + 826164652096 = 1866825^2 + 908936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4311200232721 is a prime.

It is a super-2 number, since 2×4311200232721² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4311200232721.

It is not a weakly prime, because it can be changed into another prime (4311200232761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2155600116360 + 2155600116361.

It is an arithmetic number, because the mean of its divisors is an integer number (2155600116361).

Almost surely, 2^{4311200232721} is an apocalyptic number.

It is an amenable number.

4311200232721 is a deficient number, since it is larger than the sum of its proper divisors (1).

4311200232721 is an equidigital number, since it uses as much as digits as its factorization.

4311200232721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 4311200232721 its reverse (1272320021134), we get a palindrome (5583520253855).

The spelling of 4311200232721 in words is "four trillion, three hundred eleven billion, two hundred million, two hundred thirty-two thousand, seven hundred twenty-one".