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113123311 = 7215115289
BaseRepresentation
bin1101011111000…
…01111111101111
321212212021000021
412233201333233
5212424421221
615120343011
72542350400
oct657417757
9255767007
10113123311
1158945244
1231a74a67
131a589b92
14110499a7
159de8041
hex6be1fef

113123311 has 12 divisors (see below), whose sum is σ = 132472560. Its totient is φ = 96314400.

The previous prime is 113123293. The next prime is 113123317. The reversal of 113123311 is 113321311.

It is not a de Polignac number, because 113123311 - 29 = 113122799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113123317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 246 + ... + 15043.

It is an arithmetic number, because the mean of its divisors is an integer number (11039380).

Almost surely, 2113123311 is an apocalyptic number.

113123311 is a deficient number, since it is larger than the sum of its proper divisors (19349249).

113123311 is a wasteful number, since it uses less digits than its factorization.

113123311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15454 (or 15447 counting only the distinct ones).

The product of its digits is 54, while the sum is 16.

The square root of 113123311 is about 10635.9442928214. The cubic root of 113123311 is about 483.6346065684.

Adding to 113123311 its reverse (113321311), we get a palindrome (226444622).

It can be divided in two parts, 1131 and 23311, that added together give a palindrome (24442).

The spelling of 113123311 in words is "one hundred thirteen million, one hundred twenty-three thousand, three hundred eleven".

Divisors: 1 7 49 151 1057 7399 15289 107023 749161 2308639 16160473 113123311