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106231355 = 521246271
BaseRepresentation
bin1100101010011…
…11011000111011
321101220010000122
412111033120323
5204143400410
614312523455
72426644256
oct625173073
9241803018
10106231355
1154a6820a
122b6b058b
1319015bb9
141017409d
1594d5e55
hex654f63b

106231355 has 4 divisors (see below), whose sum is σ = 127477632. Its totient is φ = 84985080.

The previous prime is 106231343. The next prime is 106231357. The reversal of 106231355 is 553132601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 553132601 = 779018943.

It is not a de Polignac number, because 106231355 - 24 = 106231339 is a prime.

It is a super-2 number, since 2×1062313552 = 22570201570272050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106231357) 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, 10623131 + ... + 10623140.

It is an arithmetic number, because the mean of its divisors is an integer number (31869408).

Almost surely, 2106231355 is an apocalyptic number.

106231355 is a deficient number, since it is larger than the sum of its proper divisors (21246277).

106231355 is an equidigital number, since it uses as much as digits as its factorization.

106231355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21246276.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 106231355 is about 10306.8596090177. The cubic root of 106231355 is about 473.6064121624.

Adding to 106231355 its reverse (553132601), we get a palindrome (659363956).

The spelling of 106231355 in words is "one hundred six million, two hundred thirty-one thousand, three hundred fifty-five".

Divisors: 1 5 21246271 106231355