Base | Representation |
---|---|
bin | 10001001011100… |
… | …01110011000111 |
3 | 101001012002212222 |
4 | 20211301303013 |
5 | 243343333111 |
6 | 22145002555 |
7 | 3400002635 |
oct | 1045616307 |
9 | 331162788 |
10 | 144121031 |
11 | 7439729a |
12 | 4032345b |
13 | 23b21022 |
14 | 151d8355 |
15 | c9bc7db |
hex | 8971cc7 |
144121031 has 8 divisors (see below), whose sum is σ = 148274784. Its totient is φ = 139980960.
The previous prime is 144121009. The next prime is 144121037. The reversal of 144121031 is 130121441.
It is a happy number.
144121031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
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 144121031 - 210 = 144120007 is a prime.
It is a super-2 number, since 2×1441210312 = 41541743153005922, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (144121037) 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, 20261 + ... + 26433.
It is an arithmetic number, because the mean of its divisors is an integer number (18534348).
Almost surely, 2144121031 is an apocalyptic number.
144121031 is a deficient number, since it is larger than the sum of its proper divisors (4153753).
144121031 is an equidigital number, since it uses as much as digits as its factorization.
144121031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6841.
The product of its (nonzero) digits is 96, while the sum is 17.
The square root of 144121031 is about 12005.0418991355. The cubic root of 144121031 is about 524.2950853823.
Adding to 144121031 its reverse (130121441), we get a palindrome (274242472).
The spelling of 144121031 in words is "one hundred forty-four million, one hundred twenty-one thousand, thirty-one".
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