102131302321 has 2 divisors, whose sum is σ = 102131302322. Its totient is φ = 102131302320.

The previous prime is 102131302297. The next prime is 102131302333. The reversal of 102131302321 is 123203131201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72835214400 + 29296087921 = 269880^2 + 171161^2 .

It is an emirp because it is prime and its reverse (123203131201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102131302321 - 2⁷ = 102131302193 is a prime.

It is not a weakly prime, because it can be changed into another prime (102131342321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51065651160 + 51065651161.

It is an arithmetic number, because the mean of its divisors is an integer number (51065651161).

Almost surely, 2^102131302321 is an apocalyptic number.

It is an amenable number.

102131302321 is a deficient number, since it is larger than the sum of its proper divisors (1).

102131302321 is an equidigital number, since it uses as much as digits as its factorization.

102131302321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 102131302321 its reverse (123203131201), we get a palindrome (225334433522).

The spelling of 102131302321 in words is "one hundred two billion, one hundred thirty-one million, three hundred two thousand, three hundred twenty-one".