4311239230421 has 2 divisors, whose sum is σ = 4311239230422. Its totient is φ = 4311239230420.

The previous prime is 4311239230399. The next prime is 4311239230427. The reversal of 4311239230421 is 1240329321134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2488979522500 + 1822259707921 = 1577650^2 + 1349911^2 .

It is a cyclic number.

It is not a de Polignac number, because 4311239230421 - 2³⁰ = 4310165488597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4311239230427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2155619615210 + 2155619615211.

It is an arithmetic number, because the mean of its divisors is an integer number (2155619615211).

Almost surely, 2^{4311239230421} is an apocalyptic number.

It is an amenable number.

4311239230421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4311239230421 is an equidigital number, since it uses as much as digits as its factorization.

4311239230421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 4311239230421 in words is "four trillion, three hundred eleven billion, two hundred thirty-nine million, two hundred thirty thousand, four hundred twenty-one".