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13123397 = 711711601
BaseRepresentation
bin110010000011…
…111101000101
3220200201220202
4302003331011
511324422042
61145140245
7216355430
oct62037505
926621822
1013123397
117453891
12448a685
132946431
141a58817
151243632
hexc83f45

13123397 has 8 divisors (see below), whose sum is σ = 15020352. Its totient is φ = 11232000.

The previous prime is 13123393. The next prime is 13123423. The reversal of 13123397 is 79332131.

13123397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13123397 - 22 = 13123393 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 (13123391) 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, 7397 + ... + 8997.

It is an arithmetic number, because the mean of its divisors is an integer number (1877544).

Almost surely, 213123397 is an apocalyptic number.

It is an amenable number.

13123397 is a deficient number, since it is larger than the sum of its proper divisors (1896955).

13123397 is a wasteful number, since it uses less digits than its factorization.

13123397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2779.

The product of its digits is 3402, while the sum is 29.

The square root of 13123397 is about 3622.6229447736. The cubic root of 13123397 is about 235.8750954967.

The spelling of 13123397 in words is "thirteen million, one hundred twenty-three thousand, three hundred ninety-seven".

Divisors: 1 7 1171 1601 8197 11207 1874771 13123397