131020120103 has 16 divisors (see below), whose sum is σ = 139131273216. Its totient is φ = 123129357120.

The previous prime is 131020120093. The next prime is 131020120141. The reversal of 131020120103 is 301021020131.

It is a cyclic number.

It is not a de Polignac number, because 131020120103 - 2⁴ = 131020120087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131020120183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83123 + ... + 518603.

It is an arithmetic number, because the mean of its divisors is an integer number (8695704576).

Almost surely, 2^131020120103 is an apocalyptic number.

131020120103 is a deficient number, since it is larger than the sum of its proper divisors (8111153113).

131020120103 is a wasteful number, since it uses less digits than its factorization.

131020120103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435734.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 131020120103 its reverse (301021020131), we get a palindrome (432041140234).

The spelling of 131020120103 in words is "one hundred thirty-one billion, twenty million, one hundred twenty thousand, one hundred three".