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12010131 = 327379503
BaseRepresentation
bin101101110100…
…001010010011
3211121011210200
4231310022103
511033311011
61105230243
7204040650
oct55641223
924534720
1012010131
116863431
124032383
1326467b3
141848c27
1510c3856
hexb74293

12010131 has 24 divisors (see below), whose sum is σ = 19918080. Its totient is φ = 6831216.

The previous prime is 12010129. The next prime is 12010151. The reversal of 12010131 is 13101021.

12010131 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12010131 - 21 = 12010129 is a prime.

It is a super-2 number, since 2×120101312 = 288486493274322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23626 + ... + 24128.

It is an arithmetic number, because the mean of its divisors is an integer number (829920).

Almost surely, 212010131 is an apocalyptic number.

12010131 is a deficient number, since it is larger than the sum of its proper divisors (7907949).

12010131 is a wasteful number, since it uses less digits than its factorization.

12010131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895 (or 892 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 12010131 is about 3465.5635905290. The cubic root of 12010131 is about 229.0072587212.

Adding to 12010131 its reverse (13101021), we get a palindrome (25111152).

The spelling of 12010131 in words is "twelve million, ten thousand, one hundred thirty-one".

Divisors: 1 3 7 9 21 63 379 503 1137 1509 2653 3411 3521 4527 7959 10563 23877 31689 190637 571911 1334459 1715733 4003377 12010131