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13123357 = 132196167
BaseRepresentation
bin110010000011…
…111100011101
3220200201212021
4302003330131
511324421412
61145140141
7216355342
oct62037435
926621767
1013123357
117453855
12448a651
132946400
141a587c9
151243607
hexc83f1d

13123357 has 24 divisors (see below), whose sum is σ = 15430560. Its totient is φ = 11119680.

The previous prime is 13123349. The next prime is 13123381. The reversal of 13123357 is 75332131.

It is not a de Polignac number, because 13123357 - 23 = 13123349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123307) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 195838 + ... + 195904.

It is an arithmetic number, because the mean of its divisors is an integer number (642940).

Almost surely, 213123357 is an apocalyptic number.

It is an amenable number.

13123357 is a deficient number, since it is larger than the sum of its proper divisors (2307203).

13123357 is a wasteful number, since it uses less digits than its factorization.

13123357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 160 counting only the distinct ones).

The product of its digits is 1890, while the sum is 25.

The square root of 13123357 is about 3622.6174239077. The cubic root of 13123357 is about 235.8748558480.

Adding to 13123357 its reverse (75332131), we get a palindrome (88455488).

The spelling of 13123357 in words is "thirteen million, one hundred twenty-three thousand, three hundred fifty-seven".

Divisors: 1 13 19 61 67 169 247 793 871 1159 1273 3211 4087 10309 11323 15067 16549 53131 77653 195871 215137 690703 1009489 13123357