131103 has 12 divisors (see below), whose sum is σ = 216528. Its totient is φ = 74880.

The previous prime is 131101. The next prime is 131111. The reversal of 131103 is 301131.

It is not a de Polignac number, because 131103 - 2¹ = 131101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 978 + ... + 1103.

It is an arithmetic number, because the mean of its divisors is an integer number (18044).

2¹³¹¹⁰³ is an apocalyptic number.

131103 is a deficient number, since it is larger than the sum of its proper divisors (85425).

131103 is a wasteful number, since it uses less digits than its factorization.

131103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2094 (or 2091 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 9.

The square root of 131103 is about 362.0814825423. The cubic root of 131103 is about 50.8008380212.

Adding to 131103 its reverse (301131), we get a palindrome (432234).

The spelling of 131103 in words is "one hundred thirty-one thousand, one hundred three".