102303131321 has 2 divisors, whose sum is σ = 102303131322. Its totient is φ = 102303131320.

The previous prime is 102303131303. The next prime is 102303131339. The reversal of 102303131321 is 123131303201.

It is a balanced prime because it is at equal distance from previous prime (102303131303) and next prime (102303131339).

It can be written as a sum of positive squares in only one way, i.e., 85694365696 + 16608765625 = 292736^2 + 128875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102303131321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102303131293 and 102303131302.

It is not a weakly prime, because it can be changed into another prime (102303131351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51151565660 + 51151565661.

It is an arithmetic number, because the mean of its divisors is an integer number (51151565661).

Almost surely, 2^102303131321 is an apocalyptic number.

It is an amenable number.

102303131321 is a deficient number, since it is larger than the sum of its proper divisors (1).

102303131321 is an equidigital number, since it uses as much as digits as its factorization.

102303131321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 102303131321 its reverse (123131303201), we get a palindrome (225434434522).

The spelling of 102303131321 in words is "one hundred two billion, three hundred three million, one hundred thirty-one thousand, three hundred twenty-one".