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112031231 = 138617787
BaseRepresentation
bin1101010110101…
…11010111111111
321210210202221212
412223113113333
5212134444411
615041115035
72530151444
oct653272777
9253722855
10112031231
11582697a4
1231628a7b
131a296a90
1410c439cb
159c7e68b
hex6ad75ff

112031231 has 4 divisors (see below), whose sum is σ = 120649032. Its totient is φ = 103413432.

The previous prime is 112031203. The next prime is 112031233. The reversal of 112031231 is 132130211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132130211 = 142792593.

It is a cyclic number.

It is not a de Polignac number, because 112031231 - 210 = 112030207 is a prime.

It is a super-2 number, since 2×1120312312 = 25101993438750722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112031233) 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, 4308881 + ... + 4308906.

It is an arithmetic number, because the mean of its divisors is an integer number (30162258).

Almost surely, 2112031231 is an apocalyptic number.

112031231 is a deficient number, since it is larger than the sum of its proper divisors (8617801).

112031231 is an equidigital number, since it uses as much as digits as its factorization.

112031231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8617800.

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

The square root of 112031231 is about 10584.4806674678. The cubic root of 112031231 is about 482.0732529289.

Adding to 112031231 its reverse (132130211), we get a palindrome (244161442).

The spelling of 112031231 in words is "one hundred twelve million, thirty-one thousand, two hundred thirty-one".

Divisors: 1 13 8617787 112031231