Base | Representation |
---|---|
bin | 101101100100001011010… |
… | …001100010000101100111 |
3 | 102002100020010102101202221 |
4 | 231210023101202011213 |
5 | 402300214344213411 |
6 | 10354243542013211 |
7 | 442136362303525 |
oct | 55441321420547 |
9 | 12070203371687 |
10 | 3131220304231 |
11 | aa7a4125a4a8 |
12 | 426a27417207 |
13 | 199371487936 |
14 | ab7a2499315 |
15 | 566b47a4071 |
hex | 2d90b462167 |
3131220304231 has 8 divisors (see below), whose sum is σ = 3239307877680. Its totient is φ = 3023140361472.
The previous prime is 3131220304229. The next prime is 3131220304273. The reversal of 3131220304231 is 1324030221313.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 3131220304231 - 21 = 3131220304229 is a prime.
It is a super-2 number, since 2×31312203042312 (a number of 26 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 3131220304196 and 3131220304205.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (3131220304211) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1066525 + ... + 2720278.
It is an arithmetic number, because the mean of its divisors is an integer number (404913484710).
Almost surely, 23131220304231 is an apocalyptic number.
3131220304231 is a deficient number, since it is larger than the sum of its proper divisors (108087573449).
3131220304231 is a wasteful number, since it uses less digits than its factorization.
3131220304231 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3815345.
The product of its (nonzero) digits is 2592, while the sum is 25.
Adding to 3131220304231 its reverse (1324030221313), we get a palindrome (4455250525544).
The spelling of 3131220304231 in words is "three trillion, one hundred thirty-one billion, two hundred twenty million, three hundred four thousand, two hundred thirty-one".
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