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131133323 = 165779139
BaseRepresentation
bin1111101000011…
…10111110001011
3100010202021002202
413310032332023
5232032231243
621002350415
73151420616
oct764167613
9303667082
10131133323
1168026452
1237abb40b
13212245a9
14135b717d
15b7a44b8
hex7d0ef8b

131133323 has 4 divisors (see below), whose sum is σ = 131214120. Its totient is φ = 131052528.

The previous prime is 131133287. The next prime is 131133329. The reversal of 131133323 is 323331131.

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 131133323 - 26 = 131133259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131133295 and 131133304.

It is not an unprimeable number, because it can be changed into a prime (131133329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37913 + ... + 41226.

It is an arithmetic number, because the mean of its divisors is an integer number (32803530).

Almost surely, 2131133323 is an apocalyptic number.

131133323 is a deficient number, since it is larger than the sum of its proper divisors (80797).

131133323 is an equidigital number, since it uses as much as digits as its factorization.

131133323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80796.

The product of its digits is 486, while the sum is 20.

The square root of 131133323 is about 11451.3459034299. The cubic root of 131133323 is about 508.0475431871.

Adding to 131133323 its reverse (323331131), we get a palindrome (454464454).

The spelling of 131133323 in words is "one hundred thirty-one million, one hundred thirty-three thousand, three hundred twenty-three".

Divisors: 1 1657 79139 131133323