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12361401 = 3213105653
BaseRepresentation
bin101111001001…
…111010111001
3212021000122200
4233021322321
511131031101
61120540413
7210033033
oct57117271
925230580
1012361401
116a83338
124181709
13273a650
1418dac53
151142986
hexbc9eb9

12361401 has 12 divisors (see below), whose sum is σ = 19229028. Its totient is φ = 7606944.

The previous prime is 12361399. The next prime is 12361403. The reversal of 12361401 is 10416321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12361399) and next prime (12361403).

It can be written as a sum of positive squares in 2 ways, for example, as 767376 + 11594025 = 876^2 + 3405^2 .

It is not a de Polignac number, because 12361401 - 21 = 12361399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12361403) 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, 52710 + ... + 52943.

It is an arithmetic number, because the mean of its divisors is an integer number (1602419).

Almost surely, 212361401 is an apocalyptic number.

It is an amenable number.

12361401 is a deficient number, since it is larger than the sum of its proper divisors (6867627).

12361401 is a wasteful number, since it uses less digits than its factorization.

12361401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105672 (or 105669 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 12361401 is about 3515.8784108669. The cubic root of 12361401 is about 231.2184923228.

Adding to 12361401 its reverse (10416321), we get a palindrome (22777722).

The spelling of 12361401 in words is "twelve million, three hundred sixty-one thousand, four hundred one".

Divisors: 1 3 9 13 39 117 105653 316959 950877 1373489 4120467 12361401