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123311013230 = 25257273117569
BaseRepresentation
bin111001011010111101…
…0001011110101101110
3102210021202102111210002
41302311322023311232
54010020104410410
6132352010544302
711623522214126
oct1626572136556
9383252374702
10123311013230
1148328941399
121ba94738092
13b8221544b2
145d7ad8bc86
15331a9d17a5
hex1cb5e8bd6e

123311013230 has 32 divisors (see below), whose sum is σ = 222917758560. Its totient is φ = 49111695360.

The previous prime is 123311013211. The next prime is 123311013247. The reversal of 123311013230 is 32310113321.

123311013230 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7009886 + ... + 7027454.

It is an arithmetic number, because the mean of its divisors is an integer number (6966179955).

Almost surely, 2123311013230 is an apocalyptic number.

123311013230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123311013230 is a deficient number, since it is larger than the sum of its proper divisors (99606745330).

123311013230 is a wasteful number, since it uses less digits than its factorization.

123311013230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20564.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 123311013230 its reverse (32310113321), we get a palindrome (155621126551).

The spelling of 123311013230 in words is "one hundred twenty-three billion, three hundred eleven million, thirteen thousand, two hundred thirty".

Divisors: 1 2 5 10 257 514 1285 2570 2731 5462 13655 17569 27310 35138 87845 175690 701867 1403734 3509335 4515233 7018670 9030466 22576165 45152330 47980939 95961878 239904695 479809390 12331101323 24662202646 61655506615 123311013230