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12232112031 = 3213110374989
BaseRepresentation
bin10110110010001011…
…10011011110011111
31011120110212200012100
423121011303132133
5200022410041111
65341440340143
7612060144126
oct133105633637
934513780170
1012232112031
1152077878a7
122454614653
1311cc283219
1484079cabd
154b8d1e756
hex2d917379f

12232112031 has 12 divisors (see below), whose sum is σ = 17803482840. Its totient is φ = 8092490640.

The previous prime is 12232112023. The next prime is 12232112033. The reversal of 12232112031 is 13021123221.

It is not a de Polignac number, because 12232112031 - 23 = 12232112023 is a prime.

It is a super-2 number, since 2×122321120312 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12232111995 and 12232112013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12232112033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5186316 + ... + 5188673.

It is an arithmetic number, because the mean of its divisors is an integer number (1483623570).

Almost surely, 212232112031 is an apocalyptic number.

12232112031 is a deficient number, since it is larger than the sum of its proper divisors (5571370809).

12232112031 is a wasteful number, since it uses less digits than its factorization.

12232112031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10375126 (or 10375123 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12232112031 its reverse (13021123221), we get a palindrome (25253235252).

The spelling of 12232112031 in words is "twelve billion, two hundred thirty-two million, one hundred twelve thousand, thirty-one".

Divisors: 1 3 9 131 393 1179 10374989 31124967 93374901 1359123559 4077370677 12232112031