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12319031990 = 251327928337
BaseRepresentation
bin10110111100100010…
…11000001010110110
31011210112102122222002
423132101120022312
5200212133010430
65354223335302
7614164021106
oct133621301266
934715378862
1012319031990
115251855081
122479751532
131214297255
1484c147206
154c178d845
hex2de4582b6

12319031990 has 16 divisors (see below), whose sum is σ = 22190991552. Its totient is φ = 4923894144.

The previous prime is 12319031981. The next prime is 12319031993. The reversal of 12319031990 is 9913091321.

12319031990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12319031993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450899 + ... + 477438.

It is an arithmetic number, because the mean of its divisors is an integer number (1386936972).

Almost surely, 212319031990 is an apocalyptic number.

12319031990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12319031990 is a deficient number, since it is larger than the sum of its proper divisors (9871959562).

12319031990 is a wasteful number, since it uses less digits than its factorization.

12319031990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929671.

The product of its (nonzero) digits is 13122, while the sum is 38.

The spelling of 12319031990 in words is "twelve billion, three hundred nineteen million, thirty-one thousand, nine hundred ninety".

Divisors: 1 2 5 10 1327 2654 6635 13270 928337 1856674 4641685 9283370 1231903199 2463806398 6159515995 12319031990