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12318293910 = 2351331585369
BaseRepresentation
bin10110111100011101…
…00011111110010110
31011210111001011111210
423132032203332112
5200211440401120
65354155442250
7614154525216
oct133616437626
934714034453
1012318293910
1152513a059a
122479456386
131214099310
1484bdd4246
154c1694ce0
hex2de3a3f96

12318293910 has 32 divisors (see below), whose sum is σ = 31838052960. Its totient is φ = 3032195328.

The previous prime is 12318293863. The next prime is 12318293917. The reversal of 12318293910 is 1939281321.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12318293917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15792295 + ... + 15793074.

It is an arithmetic number, because the mean of its divisors is an integer number (994939155).

Almost surely, 212318293910 is an apocalyptic number.

12318293910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12318293910 is an abundant number, since it is smaller than the sum of its proper divisors (19519759050).

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

12318293910 is a wasteful number, since it uses less digits than its factorization.

12318293910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31585392.

The product of its (nonzero) digits is 23328, while the sum is 39.

The spelling of 12318293910 in words is "twelve billion, three hundred eighteen million, two hundred ninety-three thousand, nine hundred ten".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 195 390 31585369 63170738 94756107 157926845 189512214 315853690 410609797 473780535 821219594 947561070 1231829391 2053048985 2463658782 4106097970 6159146955 12318293910