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12312230121310 = 25710316633102667
BaseRepresentation
bin1011001100101010101000…
…0110100100111101011110
31121121001000111010122222111
42303022222012210331132
53103210421402340220
642104054353104234
72410346353161250
oct263125206447536
947531014118874
1012312230121310
113a17650a19279
12146a238b5807a
136b4066255562
14307cb5121cd0
1516540915915a
hexb32aa1a4f5e

12312230121310 has 64 divisors (see below), whose sum is σ = 25575705971712. Its totient is φ = 4180060152576.

The previous prime is 12312230121299. The next prime is 12312230121311. The reversal of 12312230121310 is 1312103221321.

It is a super-2 number, since 2×123122301213102 (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312230121311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119872597 + ... + 119975263.

It is an arithmetic number, because the mean of its divisors is an integer number (399620405808).

Almost surely, 212312230121310 is an apocalyptic number.

12312230121310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12312230121310 is an abundant number, since it is smaller than the sum of its proper divisors (13263475850402).

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

12312230121310 is a wasteful number, since it uses less digits than its factorization.

12312230121310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119417.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 12312230121310 its reverse (1312103221321), we get a palindrome (13624333342631).

The spelling of 12312230121310 in words is "twelve trillion, three hundred twelve billion, two hundred thirty million, one hundred twenty-one thousand, three hundred ten".

Divisors: 1 2 5 7 10 14 35 70 103 206 515 721 1030 1442 3605 7210 16633 33266 83165 102667 116431 166330 205334 232862 513335 582155 718669 1026670 1164310 1437338 1713199 3426398 3593345 7186690 8565995 10574701 11992393 17131990 21149402 23984786 52873505 59961965 74022907 105747010 119923930 148045814 370114535 740229070 1707660211 3415320422 8538301055 11953621477 17076602110 23907242954 59768107385 119536214770 175889001733 351778003466 879445008665 1231223012131 1758890017330 2462446024262 6156115060655 12312230121310