Base | Representation |
---|---|
bin | 11100111000111100… |
… | …101110000001001101 |
3 | 2222001212000001112220 |
4 | 130320330232001031 |
5 | 1002012133243201 |
6 | 22130034445553 |
7 | 2145465311511 |
oct | 347074560115 |
9 | 88055001486 |
10 | 31020212301 |
11 | 121791126a1 |
12 | 60187338b9 |
13 | 2c0485b210 |
14 | 1703b38141 |
15 | c1849e036 |
hex | 738f2e04d |
31020212301 has 8 divisors (see below), whose sum is σ = 44541843360. Its totient is φ = 19089361392.
The previous prime is 31020212287. The next prime is 31020212317. The reversal of 31020212301 is 10321202013.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 31020212301 - 27 = 31020212173 is a prime.
It is a super-2 number, since 2×310202123012 (a number of 22 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (31020212701) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397694991 + ... + 397695068.
It is an arithmetic number, because the mean of its divisors is an integer number (5567730420).
Almost surely, 231020212301 is an apocalyptic number.
It is an amenable number.
31020212301 is a deficient number, since it is larger than the sum of its proper divisors (13521631059).
31020212301 is a wasteful number, since it uses less digits than its factorization.
31020212301 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 795390075.
The product of its (nonzero) digits is 72, while the sum is 15.
Adding to 31020212301 its reverse (10321202013), we get a palindrome (41341414314).
The spelling of 31020212301 in words is "thirty-one billion, twenty million, two hundred twelve thousand, three hundred one".
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