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131003 = 269487
BaseRepresentation
bin11111111110111011
320122200222
4133332323
513143003
62450255
71053635
oct377673
9218628
10131003
118a474
126398b
1347822
1435a55
1528c38
hex1ffbb

131003 has 4 divisors (see below), whose sum is σ = 131760. Its totient is φ = 130248.

The previous prime is 130987. The next prime is 131009. The reversal of 131003 is 300131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 300131 = 1323087.

It is a cyclic number.

It is not a de Polignac number, because 131003 - 24 = 130987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26 + ... + 512.

It is an arithmetic number, because the mean of its divisors is an integer number (32940).

2131003 is an apocalyptic number.

131003 is a deficient number, since it is larger than the sum of its proper divisors (757).

131003 is an equidigital number, since it uses as much as digits as its factorization.

131003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756.

The product of its (nonzero) digits is 9, while the sum is 8.

The square root of 131003 is about 361.9433657356. The cubic root of 131003 is about 50.7879184694.

Adding to 131003 its reverse (300131), we get a palindrome (431134).

The spelling of 131003 in words is "one hundred thirty-one thousand, three".

Divisors: 1 269 487 131003