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13121404230 = 2351139761831
BaseRepresentation
bin11000011100001100…
…01011110101000110
31020212110020101202110
430032012023311012
5203333034413410
610010005121450
7643106044554
oct141606136506
936773211673
1013121404230
115623766230
1226623b9286
13131159ab1c
148c692cbd4
1551be33720
hex30e18bd46

13121404230 has 32 divisors (see below), whose sum is σ = 34354222848. Its totient is φ = 3180946400.

The previous prime is 13121404229. The next prime is 13121404243. The reversal of 13121404230 is 3240412131.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13121404197 and 13121404206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19880586 + ... + 19881245.

It is an arithmetic number, because the mean of its divisors is an integer number (1073569464).

Almost surely, 213121404230 is an apocalyptic number.

13121404230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13121404230 is an abundant number, since it is smaller than the sum of its proper divisors (21232818618).

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

13121404230 is a wasteful number, since it uses less digits than its factorization.

13121404230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39761852.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 13121404230 its reverse (3240412131), we get a palindrome (16361816361).

The spelling of 13121404230 in words is "thirteen billion, one hundred twenty-one million, four hundred four thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 165 330 39761831 79523662 119285493 198809155 238570986 397618310 437380141 596427465 874760282 1192854930 1312140423 2186900705 2624280846 4373801410 6560702115 13121404230