103020113081 has 2 divisors, whose sum is σ = 103020113082. Its totient is φ = 103020113080.

The previous prime is 103020113071. The next prime is 103020113159. The reversal of 103020113081 is 180311020301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75836347456 + 27183765625 = 275384^2 + 164875^2 .

It is an emirp because it is prime and its reverse (180311020301) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103020113081 is a prime.

It is a super-2 number, since 2×103020113081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (103020113011) 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, 51510056540 + 51510056541.

It is an arithmetic number, because the mean of its divisors is an integer number (51510056541).

Almost surely, 2^103020113081 is an apocalyptic number.

It is an amenable number.

103020113081 is a deficient number, since it is larger than the sum of its proper divisors (1).

103020113081 is an equidigital number, since it uses as much as digits as its factorization.

103020113081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 103020113081 its reverse (180311020301), we get a palindrome (283331133382).

The spelling of 103020113081 in words is "one hundred three billion, twenty million, one hundred thirteen thousand, eighty-one".