Base | Representation |
---|---|
bin | 1011101010011111… |
… | …1011101001010101 |
3 | 22002012120210211211 |
4 | 2322213323221111 |
5 | 22403020430401 |
6 | 1234404501421 |
7 | 140406213433 |
oct | 27247735125 |
9 | 8065523754 |
10 | 3131030101 |
11 | 1367426291 |
12 | 7346aa871 |
13 | 3ab8a0b44 |
14 | 219b93d53 |
15 | 134d27951 |
hex | ba9fba55 |
3131030101 has 8 divisors (see below), whose sum is σ = 3239543808. Its totient is φ = 3022986000.
The previous prime is 3131030087. The next prime is 3131030107. The reversal of 3131030101 is 1010301313.
It is a happy number.
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 3131030101 - 217 = 3130899029 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (3131030107) 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, 103810 + ... + 130531.
It is an arithmetic number, because the mean of its divisors is an integer number (404942976).
Almost surely, 23131030101 is an apocalyptic number.
3131030101 is a gapful number since it is divisible by the number (31) formed by its first and last digit.
It is an amenable number.
3131030101 is a deficient number, since it is larger than the sum of its proper divisors (108513707).
3131030101 is a wasteful number, since it uses less digits than its factorization.
3131030101 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 234803.
The product of its (nonzero) digits is 27, while the sum is 13.
The square root of 3131030101 is about 55955.6083069427. The cubic root of 3131030101 is about 1462.9486447469.
Adding to 3131030101 its reverse (1010301313), we get a palindrome (4141331414).
The spelling of 3131030101 in words is "three billion, one hundred thirty-one million, thirty thousand, one hundred one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.069 sec. • engine limits •