Base | Representation |
---|---|
bin | 11100111001010011… |
… | …100001100010010001 |
3 | 2222002021020210001222 |
4 | 130321103201202101 |
5 | 1002020201043411 |
6 | 22130410534425 |
7 | 2145600160556 |
oct | 347123414221 |
9 | 88067223058 |
10 | 31026190481 |
11 | 12181526140 |
12 | 601a737415 |
13 | 2c05b722c0 |
14 | 1704852a2d |
15 | c18c804db |
hex | 7394e1891 |
31026190481 has 8 divisors (see below), whose sum is σ = 36450349824. Its totient is φ = 26035963920.
The previous prime is 31026190471. The next prime is 31026190487. The reversal of 31026190481 is 18409162013.
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 31026190481 - 214 = 31026174097 is a prime.
It is a super-2 number, since 2×310261904812 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (31026190487) 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, 108483041 + ... + 108483326.
It is an arithmetic number, because the mean of its divisors is an integer number (4556293728).
Almost surely, 231026190481 is an apocalyptic number.
It is an amenable number.
31026190481 is a deficient number, since it is larger than the sum of its proper divisors (5424159343).
31026190481 is a wasteful number, since it uses less digits than its factorization.
31026190481 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 216966391.
The product of its (nonzero) digits is 10368, while the sum is 35.
The spelling of 31026190481 in words is "thirty-one billion, twenty-six million, one hundred ninety thousand, four hundred eighty-one".
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