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12131220023030 = 251963848526437
BaseRepresentation
bin1011000010001000010100…
…0011110110011011110110
31120221201210120200221101102
42300202011003312123312
53042224214311214110
641445001110330102
72361310640551223
oct260420503663366
946851716627342
1012131220023030
113957904496329
12143b141059932
1369cc7a279624
142dd22310a94a
15160862e275a5
hexb08850f66f6

12131220023030 has 16 divisors (see below), whose sum is σ = 22985469517680. Its totient is φ = 4597093903392.

The previous prime is 12131220023009. The next prime is 12131220023051. The reversal of 12131220023030 is 3032002213121.

It is an interprime number because it is at equal distance from previous prime (12131220023009) and next prime (12131220023051).

It is a junction number, because it is equal to n+sod(n) for n = 12131220022993 and 12131220023011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31924263029 + ... + 31924263408.

It is an arithmetic number, because the mean of its divisors is an integer number (1436591844855).

Almost surely, 212131220023030 is an apocalyptic number.

12131220023030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12131220023030 is a deficient number, since it is larger than the sum of its proper divisors (10854249494650).

12131220023030 is a wasteful number, since it uses less digits than its factorization.

12131220023030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63848526463.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12131220023030 its reverse (3032002213121), we get a palindrome (15163222236151).

The spelling of 12131220023030 in words is "twelve trillion, one hundred thirty-one billion, two hundred twenty million, twenty-three thousand, thirty".

Divisors: 1 2 5 10 19 38 95 190 63848526437 127697052874 319242632185 638485264370 1213122002303 2426244004606 6065610011515 12131220023030