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132231311 = 569323227
BaseRepresentation
bin1111110000110…
…11000010001111
3100012211001020222
413320123002033
5232322400221
621042101555
73163643012
oct770330217
9305731228
10132231311
1168706383
123834a8bb
132151a2a4
14137c1379
15b91e9ab
hex7e1b08f

132231311 has 4 divisors (see below), whose sum is σ = 132260232. Its totient is φ = 132202392.

The previous prime is 132231259. The next prime is 132231313. The reversal of 132231311 is 113132231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113132231 = 967116993.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-132231311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 132231311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132231313) 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, 5921 + ... + 17306.

It is an arithmetic number, because the mean of its divisors is an integer number (33065058).

Almost surely, 2132231311 is an apocalyptic number.

132231311 is a deficient number, since it is larger than the sum of its proper divisors (28921).

132231311 is an equidigital number, since it uses as much as digits as its factorization.

132231311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28920.

The product of its digits is 108, while the sum is 17.

The square root of 132231311 is about 11499.1874060735. The cubic root of 132231311 is about 509.4615758146.

Adding to 132231311 its reverse (113132231), we get a palindrome (245363542).

The spelling of 132231311 in words is "one hundred thirty-two million, two hundred thirty-one thousand, three hundred eleven".

Divisors: 1 5693 23227 132231311