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1313321230 = 2513171931277
BaseRepresentation
bin100111001000111…
…1011000100001110
310101112020122001001
41032101323010032
510142202234410
6334153010514
744355021604
oct11621730416
93345218031
101313321230
11614376751
123079b3a3a
1317c120470
14c65cb874
157a47233a
hex4e47b10e

1313321230 has 64 divisors (see below), whose sum is σ = 2837540160. Its totient is φ = 432359424.

The previous prime is 1313321209. The next prime is 1313321257. The reversal of 1313321230 is 321233131.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 1313321198 and 1313321207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26352 + ... + 57628.

It is an arithmetic number, because the mean of its divisors is an integer number (44336565).

Almost surely, 21313321230 is an apocalyptic number.

1313321230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1313321230 is an abundant number, since it is smaller than the sum of its proper divisors (1524218930).

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

1313321230 is a wasteful number, since it uses less digits than its factorization.

1313321230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31333.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1313321230 is about 36239.7741438878. The cubic root of 1313321230 is about 1095.1080924409.

Adding to 1313321230 its reverse (321233131), we get a palindrome (1634554361).

The spelling of 1313321230 in words is "one billion, three hundred thirteen million, three hundred twenty-one thousand, two hundred thirty".

Divisors: 1 2 5 10 13 17 19 26 34 38 65 85 95 130 170 190 221 247 323 442 494 646 1105 1235 1615 2210 2470 3230 4199 8398 20995 31277 41990 62554 156385 312770 406601 531709 594263 813202 1063418 1188526 2033005 2658545 2971315 4066010 5317090 5942630 6912217 7725419 10102471 13824434 15450838 20204942 34561085 38627095 50512355 69122170 77254190 101024710 131332123 262664246 656660615 1313321230