131121213103 has 2 divisors, whose sum is σ = 131121213104. Its totient is φ = 131121213102.

The previous prime is 131121213071. The next prime is 131121213151. The reversal of 131121213103 is 301312121131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131121213103 - 2⁵ = 131121213071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131121213173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65560606551 + 65560606552.

It is an arithmetic number, because the mean of its divisors is an integer number (65560606552).

Almost surely, 2^131121213103 is an apocalyptic number.

131121213103 is a deficient number, since it is larger than the sum of its proper divisors (1).

131121213103 is an equidigital number, since it uses as much as digits as its factorization.

131121213103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 131121213103 its reverse (301312121131), we get a palindrome (432433334234).

The spelling of 131121213103 in words is "one hundred thirty-one billion, one hundred twenty-one million, two hundred thirteen thousand, one hundred three".