5231230043021 has 2 divisors, whose sum is σ = 5231230043022. Its totient is φ = 5231230043020.

The previous prime is 5231230042999. The next prime is 5231230043041. The reversal of 5231230043021 is 1203400321325.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5119987782121 + 111242260900 = 2262739^2 + 333530^2 .

It is a cyclic number.

It is not a de Polignac number, because 5231230043021 - 2³⁸ = 4956352136077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5231230043041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2615615021510 + 2615615021511.

It is an arithmetic number, because the mean of its divisors is an integer number (2615615021511).

Almost surely, 2^{5231230043021} is an apocalyptic number.

It is an amenable number.

5231230043021 is a deficient number, since it is larger than the sum of its proper divisors (1).

5231230043021 is an equidigital number, since it uses as much as digits as its factorization.

5231230043021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 5231230043021 its reverse (1203400321325), we get a palindrome (6434630364346).

The spelling of 5231230043021 in words is "five trillion, two hundred thirty-one billion, two hundred thirty million, forty-three thousand, twenty-one".