Base | Representation |
---|---|
bin | 1001000101001111010… |
… | …10010110010111001111 |
3 | 1002211110100010222201122 |
4 | 10202213222112113033 |
5 | 20103034414321111 |
6 | 355204250031155 |
7 | 31354621562054 |
oct | 4424752262717 |
9 | 1084410128648 |
10 | 312050542031 |
11 | 110381439948 |
12 | 505891184bb |
13 | 235705ab457 |
14 | 1116375902b |
15 | 81b55b4cdb |
hex | 48a7a965cf |
312050542031 has 4 divisors (see below), whose sum is σ = 314117102064. Its totient is φ = 309983982000.
The previous prime is 312050541991. The next prime is 312050542057. The reversal of 312050542031 is 130245050213.
It is a happy number.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130245050213 = 241 ⋅540435893.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-312050542031 is a prime.
It is a super-4 number, since 4×3120505420314 (a number of 47 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (312050541031) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1033279790 + ... + 1033280091.
It is an arithmetic number, because the mean of its divisors is an integer number (78529275516).
Almost surely, 2312050542031 is an apocalyptic number.
312050542031 is a deficient number, since it is larger than the sum of its proper divisors (2066560033).
312050542031 is a wasteful number, since it uses less digits than its factorization.
312050542031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2066560032.
The product of its (nonzero) digits is 3600, while the sum is 26.
Adding to 312050542031 its reverse (130245050213), we get a palindrome (442295592244).
The spelling of 312050542031 in words is "three hundred twelve billion, fifty million, five hundred forty-two thousand, thirty-one".
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