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113843231 = 1943139343
BaseRepresentation
bin1101100100100…
…01110000011111
321221012211112222
412302101300133
5213120440411
615144015555
72551436315
oct662216037
9257184488
10113843231
1159297117
12321615bb
131a77c778
14111960b5
159edb4db
hex6c91c1f

113843231 has 8 divisors (see below), whose sum is σ = 122622720. Its totient is φ = 105342552.

The previous prime is 113843209. The next prime is 113843243. The reversal of 113843231 is 132348311.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-113843231 is a prime.

It is a super-2 number, since 2×1138432312 = 25920562489038722, which contains 22 as substring.

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 113843231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113843201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68855 + ... + 70488.

It is an arithmetic number, because the mean of its divisors is an integer number (15327840).

Almost surely, 2113843231 is an apocalyptic number.

113843231 is a deficient number, since it is larger than the sum of its proper divisors (8779489).

113843231 is a wasteful number, since it uses less digits than its factorization.

113843231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139405.

The product of its digits is 1728, while the sum is 26.

The square root of 113843231 is about 10669.7343453340. The cubic root of 113843231 is about 484.6583926706.

The spelling of 113843231 in words is "one hundred thirteen million, eight hundred forty-three thousand, two hundred thirty-one".

Divisors: 1 19 43 817 139343 2647517 5991749 113843231