103021320137 has 2 divisors, whose sum is σ = 103021320138. Its totient is φ = 103021320136.

The previous prime is 103021320091. The next prime is 103021320151. The reversal of 103021320137 is 731023120301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71030778256 + 31990541881 = 266516^2 + 178859^2 .

It is a cyclic number.

It is not a de Polignac number, because 103021320137 - 2¹⁰ = 103021319113 is a prime.

It is a super-2 number, since 2×103021320137² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (103021320637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51510660068 + 51510660069.

It is an arithmetic number, because the mean of its divisors is an integer number (51510660069).

Almost surely, 2^103021320137 is an apocalyptic number.

It is an amenable number.

103021320137 is a deficient number, since it is larger than the sum of its proper divisors (1).

103021320137 is an equidigital number, since it uses as much as digits as its factorization.

103021320137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 23.

Adding to 103021320137 its reverse (731023120301), we get a palindrome (834044440438).

The spelling of 103021320137 in words is "one hundred three billion, twenty-one million, three hundred twenty thousand, one hundred thirty-seven".