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123131041 = 11103108677
BaseRepresentation
bin1110101011011…
…01010010100001
322120200201000221
413111231102201
5223010143131
620115043041
73023411425
oct725552241
9276621027
10123131041
11635601a0
12352a0481
131c682107
14124d2b85
15ac23411
hex756d4a1

123131041 has 8 divisors (see below), whose sum is σ = 135630144. Its totient is φ = 110849520.

The previous prime is 123131033. The next prime is 123131083. The reversal of 123131041 is 140131321.

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 123131041 - 23 = 123131033 is a prime.

It is a super-2 number, since 2×1231310412 = 30322506515487362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123111041) 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, 53206 + ... + 55471.

It is an arithmetic number, because the mean of its divisors is an integer number (16953768).

Almost surely, 2123131041 is an apocalyptic number.

123131041 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123131041 is a deficient number, since it is larger than the sum of its proper divisors (12499103).

123131041 is a wasteful number, since it uses less digits than its factorization.

123131041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108791.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 123131041 is about 11096.4427182769. The cubic root of 123131041 is about 497.4955308808.

Adding to 123131041 its reverse (140131321), we get a palindrome (263262362).

The spelling of 123131041 in words is "one hundred twenty-three million, one hundred thirty-one thousand, forty-one".

Divisors: 1 11 103 1133 108677 1195447 11193731 123131041