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231377105 = 5113409517
BaseRepresentation
bin11011100101010…
…00100011010001
3121010101011201102
431302220203101
5433213031410
634543114145
75506446551
oct1562504321
9533334642
10231377105
11109674053
12655a2955
1338c2203b
1422a2d161
15154a62a5
hexdca88d1

231377105 has 8 divisors (see below), whose sum is σ = 280110312. Its totient is φ = 183463168.

The previous prime is 231377093. The next prime is 231377129. The reversal of 231377105 is 501773132.

It can be written as a sum of positive squares in 4 ways, for example, as 34058896 + 197318209 = 5836^2 + 14047^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 231377105 - 214 = 231360721 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204194 + ... + 205323.

It is an arithmetic number, because the mean of its divisors is an integer number (35013789).

Almost surely, 2231377105 is an apocalyptic number.

It is an amenable number.

231377105 is a deficient number, since it is larger than the sum of its proper divisors (48733207).

231377105 is a wasteful number, since it uses less digits than its factorization.

231377105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409635.

The product of its (nonzero) digits is 4410, while the sum is 29.

The square root of 231377105 is about 15211.0849382942. The cubic root of 231377105 is about 613.9129496002.

The spelling of 231377105 in words is "two hundred thirty-one million, three hundred seventy-seven thousand, one hundred five".

Divisors: 1 5 113 565 409517 2047585 46275421 231377105