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231132011 = 1130768443
BaseRepresentation
bin11011100011011…
…00101101101011
3121002220201111212
431301230231223
5433132211021
634533543335
75504406155
oct1561545553
9532821455
10231132011
111095169a0
12654a4b4b
1338b67606
14229a7ad5
151545885b
hexdc6cb6b

231132011 has 8 divisors (see below), whose sum is σ = 252969024. Its totient is φ = 209432520.

The previous prime is 231131987. The next prime is 231132019. The reversal of 231132011 is 110231132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231132011 - 214 = 231115627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231132019) 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 7 ways as a sum of consecutive naturals, for example, 30845 + ... + 37598.

It is an arithmetic number, because the mean of its divisors is an integer number (31621128).

Almost surely, 2231132011 is an apocalyptic number.

231132011 is a deficient number, since it is larger than the sum of its proper divisors (21837013).

231132011 is a wasteful number, since it uses less digits than its factorization.

231132011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68761.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 231132011 is about 15203.0263763502. The cubic root of 231132011 is about 613.6961036845.

Adding to 231132011 its reverse (110231132), we get a palindrome (341363143).

The spelling of 231132011 in words is "two hundred thirty-one million, one hundred thirty-two thousand, eleven".

Divisors: 1 11 307 3377 68443 752873 21012001 231132011