131013103 has 4 divisors (see below), whose sum is σ = 141091048. Its totient is φ = 120935160.

The previous prime is 131013079. The next prime is 131013107. The reversal of 131013103 is 301310131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131013103 - 2¹³ = 131004911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 10077931 = 131013103 / (1 + 3 + 1 + 0 + 1 + 3 + 1 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131013107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5038953 + ... + 5038978.

It is an arithmetic number, because the mean of its divisors is an integer number (35272762).

Almost surely, 2^131013103 is an apocalyptic number.

131013103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131013103 is a deficient number, since it is larger than the sum of its proper divisors (10077945).

131013103 is a wasteful number, since it uses less digits than its factorization.

131013103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10077944.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 131013103 is about 11446.0955351596. The cubic root of 131013103 is about 507.8922403026.

Adding to 131013103 its reverse (301310131), we get a palindrome (432323234).

The spelling of 131013103 in words is "one hundred thirty-one million, thirteen thousand, one hundred three".