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131323 = 413203
BaseRepresentation
bin100000000011111011
320200010211
4200003323
513200243
62451551
71054603
oct400373
9220124
10131323
118a735
1263bb7
1347a0a
1435c03
1528d9d
hex200fb

131323 has 4 divisors (see below), whose sum is σ = 134568. Its totient is φ = 128080.

The previous prime is 131321. The next prime is 131357. The reversal of 131323 is 323131.

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 131323 - 21 = 131321 is a prime.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 1 + 3 + 3 + 1 + 217 + 35 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131321) 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, 1561 + ... + 1642.

It is an arithmetic number, because the mean of its divisors is an integer number (33642).

2131323 is an apocalyptic number.

131323 is a deficient number, since it is larger than the sum of its proper divisors (3245).

131323 is an equidigital number, since it uses as much as digits as its factorization.

131323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3244.

The product of its digits is 54, while the sum is 13.

The square root of 131323 is about 362.3851542213. The cubic root of 131323 is about 50.8292379274.

Adding to 131323 its reverse (323131), we get a palindrome (454454).

It can be divided in two parts, 131 and 323, that added together give a palindrome (454).

The spelling of 131323 in words is "one hundred thirty-one thousand, three hundred twenty-three".

Divisors: 1 41 3203 131323