| Base | Representation |
|---|---|
| bin | 10110100110010000… |
| … | …10111011100001011 |
| 3 | 1011022111201120101001 |
| 4 | 23103020113130023 |
| 5 | 144321310322311 |
| 6 | 5323505235431 |
| 7 | 606434215132 |
| oct | 132310273413 |
| 9 | 34274646331 |
| 10 | 12132120331 |
| 11 | 51662a1631 |
| 12 | 2427032b77 |
| 13 | 11b4643436 |
| 14 | 8313b0919 |
| 15 | 4b016c4c1 |
| hex | 2d321770b |
12132120331 has 4 divisors (see below), whose sum is σ = 12770653000. Its totient is φ = 11493587664.
The previous prime is 12132120307. The next prime is 12132120347. The reversal of 12132120331 is 13302123121.
12132120331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-12132120331 is a prime.
It is a super-2 number, since 2×121321203312 (a number of 21 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 638532649 = 12132120331 / (1 + 2 + 1 + 3 + 2 + 1 + 2 + 0 + 3 + 3 + 1).
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 12132120299 and 12132120308.
It is not an unprimeable number, because it can be changed into a prime (12132120031) 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 3 ways as a sum of consecutive naturals, for example, 319266306 + ... + 319266343.
It is an arithmetic number, because the mean of its divisors is an integer number (3192663250).
Almost surely, 212132120331 is an apocalyptic number.
12132120331 is a deficient number, since it is larger than the sum of its proper divisors (638532669).
12132120331 is an equidigital number, since it uses as much as digits as its factorization.
12132120331 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 638532668.
The product of its (nonzero) digits is 216, while the sum is 19.
Adding to 12132120331 its reverse (13302123121), we get a palindrome (25434243452).
The spelling of 12132120331 in words is "twelve billion, one hundred thirty-two million, one hundred twenty thousand, three hundred thirty-one".
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