13031230312021 has 2 divisors, whose sum is σ = 13031230312022. Its totient is φ = 13031230312020.

The previous prime is 13031230311973. The next prime is 13031230312091. The reversal of 13031230312021 is 12021303213031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10886502280900 + 2144728031121 = 3299470^2 + 1464489^2 .

It is a cyclic number.

It is not a de Polignac number, because 13031230312021 - 2⁷ = 13031230311893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13031230311983 and 13031230312001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13031230312091) 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, 6515615156010 + 6515615156011.

It is an arithmetic number, because the mean of its divisors is an integer number (6515615156011).

Almost surely, 2^{13031230312021} is an apocalyptic number.

It is an amenable number.

13031230312021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13031230312021 is an equidigital number, since it uses as much as digits as its factorization.

13031230312021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 13031230312021 its reverse (12021303213031), we get a palindrome (25052533525052).

The spelling of 13031230312021 in words is "thirteen trillion, thirty-one billion, two hundred thirty million, three hundred twelve thousand, twenty-one".