Base | Representation |
---|---|
bin | 10010101110011010… |
… | …011100011100100111 |
3 | 1220220020001111201012 |
4 | 102232122130130213 |
5 | 312134121141111 |
6 | 13123034052435 |
7 | 1311150331523 |
oct | 225632343447 |
9 | 56806044635 |
10 | 20106037031 |
11 | 8588374233 |
12 | 3a9157a11b |
13 | 1b85653242 |
14 | d8a408d83 |
15 | 7ca21448b |
hex | 4ae69c727 |
20106037031 has 4 divisors (see below), whose sum is σ = 20110240200. Its totient is φ = 20101833864.
The previous prime is 20106037019. The next prime is 20106037033. The reversal of 20106037031 is 13073060102.
It is a happy number.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 20106037031 - 210 = 20106036007 is a prime.
It is a super-2 number, since 2×201060370312 (a number of 21 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 = 20106036988 and 20106037006.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20106037033) 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 3 ways as a sum of consecutive naturals, for example, 2094401 + ... + 2103978.
It is an arithmetic number, because the mean of its divisors is an integer number (5027560050).
Almost surely, 220106037031 is an apocalyptic number.
20106037031 is a deficient number, since it is larger than the sum of its proper divisors (4203169).
20106037031 is an equidigital number, since it uses as much as digits as its factorization.
20106037031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4203168.
The product of its (nonzero) digits is 756, while the sum is 23.
Adding to 20106037031 its reverse (13073060102), we get a palindrome (33179097133).
The spelling of 20106037031 in words is "twenty billion, one hundred six million, thirty-seven thousand, thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.215 sec. • engine limits •