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131103 = 3272081
BaseRepresentation
bin100000000000011111
320122211200
4200000133
513143403
62450543
71054140
oct400037
9218750
10131103
118a555
1263a53
134789b
1435ac7
1528ca3
hex2001f

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.

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

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.

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

Divisors: 1 3 7 9 21 63 2081 6243 14567 18729 43701 131103