103131301321 has 2 divisors, whose sum is σ = 103131301322. Its totient is φ = 103131301320.

The previous prime is 103131301213. The next prime is 103131301337. The reversal of 103131301321 is 123103131301.

Together with previous prime (103131301213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101720172096 + 1411129225 = 318936^2 + 37565^2 .

It is an emirp because it is prime and its reverse (123103131301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103131301321 - 2⁹ = 103131300809 is a prime.

It is not a weakly prime, because it can be changed into another prime (103131301121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51565650660 + 51565650661.

It is an arithmetic number, because the mean of its divisors is an integer number (51565650661).

Almost surely, 2^103131301321 is an apocalyptic number.

It is an amenable number.

103131301321 is a deficient number, since it is larger than the sum of its proper divisors (1).

103131301321 is an equidigital number, since it uses as much as digits as its factorization.

103131301321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 103131301321 its reverse (123103131301), we get a palindrome (226234432622).

The spelling of 103131301321 in words is "one hundred three billion, one hundred thirty-one million, three hundred one thousand, three hundred twenty-one".