131020103 has 2 divisors, whose sum is σ = 131020104. Its totient is φ = 131020102.

The previous prime is 131020093. The next prime is 131020117. The reversal of 131020103 is 301020131.

It is a weak prime.

It is an emirp because it is prime and its reverse (301020131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131020103 - 2¹⁶ = 130954567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131023103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65510051 + 65510052.

It is an arithmetic number, because the mean of its divisors is an integer number (65510052).

Almost surely, 2^131020103 is an apocalyptic number.

131020103 is a deficient number, since it is larger than the sum of its proper divisors (1).

131020103 is an equidigital number, since it uses as much as digits as its factorization.

131020103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 131020103 is about 11446.4013122029. The cubic root of 131020103 is about 507.9012856634.

Adding to 131020103 its reverse (301020131), we get a palindrome (432040234).

The spelling of 131020103 in words is "one hundred thirty-one million, twenty thousand, one hundred three".