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131384833 = 643204331
BaseRepresentation
bin1111101010011…
…00011000000001
3100011020001002221
413311030120001
5232113303313
621012011041
73153516106
oct765143001
9304201087
10131384833
1168188408
1238000a81
13212b1c08
1413640aad
15b803c8d
hex7d4c601

131384833 has 4 divisors (see below), whose sum is σ = 131589808. Its totient is φ = 131179860.

The previous prime is 131384807. The next prime is 131384837. The reversal of 131384833 is 338483131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131384833 - 221 = 129287681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131384837) 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, 101523 + ... + 102808.

It is an arithmetic number, because the mean of its divisors is an integer number (32897452).

Almost surely, 2131384833 is an apocalyptic number.

It is an amenable number.

131384833 is a deficient number, since it is larger than the sum of its proper divisors (204975).

131384833 is an equidigital number, since it uses as much as digits as its factorization.

131384833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204974.

The product of its digits is 20736, while the sum is 34.

The square root of 131384833 is about 11462.3223214146. The cubic root of 131384833 is about 508.3721426848.

It can be divided in two parts, 13138 and 4833, that added together give a palindrome (17971).

The spelling of 131384833 in words is "one hundred thirty-one million, three hundred eighty-four thousand, eight hundred thirty-three".

Divisors: 1 643 204331 131384833