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13121130 = 2351139761
BaseRepresentation
bin110010000011…
…011001101010
3220200121210210
4302003121222
511324334010
61145121550
7216346011
oct62033152
926617723
1013121130
117452110
1244892b6
1329453a9
141a57a78
151242b20
hexc8366a

13121130 has 32 divisors (see below), whose sum is σ = 34354368. Its totient is φ = 3180800.

The previous prime is 13121117. The next prime is 13121159. The reversal of 13121130 is 3112131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19551 + ... + 20210.

It is an arithmetic number, because the mean of its divisors is an integer number (1073574).

Almost surely, 213121130 is an apocalyptic number.

13121130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13121130 is an abundant number, since it is smaller than the sum of its proper divisors (21233238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13121130 is a wasteful number, since it uses less digits than its factorization.

13121130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39782.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 13121130 is about 3622.3100364270. The cubic root of 13121130 is about 235.8615126407.

Adding to 13121130 its reverse (3112131), we get a palindrome (16233261).

It can be divided in two parts, 1312 and 1130, that added together give a palindrome (2442).

The spelling of 13121130 in words is "thirteen million, one hundred twenty-one thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 165 330 39761 79522 119283 198805 238566 397610 437371 596415 874742 1192830 1312113 2186855 2624226 4373710 6560565 13121130